SMD code search: identify a part by its marking
No part printed 3B3 is recorded in USP-6C.
No part printed 3B3 is recorded in USP-6C
Not sure which one you have?
Answer up to 4 quick questions and these 3 parts are ranked, with a meter test that settles it. It works on a dead part too.
3 parts have no package on record. Nothing rules them out, so they stay.
PLZ3V3BZener diode, VishayZener diodeVishay
- What it is
- Zener diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- Details
- 3.3 V Zener diode
- Source
- Manufacturer datasheet
Is it dead?
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- Open both ways, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: leaky.
- On the board
- this is a first look only: the meter reads every path between those pins, and a short can be a neighbour. Lift one leg before you condemn it.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- A meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
RKZ3.3BKUZener diode, RenesasZener diodeRenesas
- What it is
- Zener diode
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 3.32..3.53V, Izt=20mA, Zzt=130, 500mW
- Source
- Published code list
Is it dead?
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- Open both ways, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: leaky.
- On the board
- this is a first look only: the meter reads every path between those pins, and a short can be a neighbour. Lift one leg before you condemn it.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- A meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6221B341GRLDO regulator, TorexLDO regulatorTorex
- What it is
- LDO regulator
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 3.4V±1%, 200mA, +CE, CL
- Source
- Published code list
Is it dead?
Voltage, board powered, black probe on ground. Then ohms with the power off.
Working, it reads
Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.
Dead, it reads
- Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
- Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
- Power off, input to output near 0 Ω: shorted.
- On the board:
- An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
- Compare:
- The same regulator on another rail or another board shows the right voltages and the right resistances.
- Watch for:
- Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
53 more parts have codes that begin with 3B3: 35 in USP-6C, 18 with no package on record
Codes that begin with 3B3
For a marking with its end worn or burnt off. Each one shows its full printed code.
XC6101B316ERprinted 3B316USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B316. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 1.6V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B317ERprinted 3B317USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B317. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 1.7V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B318ERprinted 3B318USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B318. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 1.8V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B319ERprinted 3B319USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B319. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 1.9V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B320ERprinted 3B320USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B320. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.0V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B321ERprinted 3B321USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B321. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.1V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B322ERprinted 3B322USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B322. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.2V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B323ERprinted 3B323USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B323. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.3V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B324ERprinted 3B324USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B324. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.4V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B325ERprinted 3B325USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B325. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.5V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B326ERprinted 3B326USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B326. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.6V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B327ERprinted 3B327USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B327. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.7V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B328ERprinted 3B328USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B328. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.8V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B329ERprinted 3B329USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B329. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 2.9V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B330ERprinted 3B330USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B330. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.0V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B331ERprinted 3B331USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B331. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.1V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B332ERprinted 3B332USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B332. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.2V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B333ERprinted 3B333USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B333. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.3V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B334ERprinted 3B334USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B334. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.4V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B335ERprinted 3B335USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B335. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.5V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B336ERprinted 3B336USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B336. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.6V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B337ERprinted 3B337USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B337. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.7V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B338ERprinted 3B338USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B338. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.8V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B339ERprinted 3B339USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B339. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 3.9V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B340ERprinted 3B340USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B340. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.0V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B341ERprinted 3B341USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B341. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.1V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B342ERprinted 3B342USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B342. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.2V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B343ERprinted 3B343USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B343. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.3V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B344ERprinted 3B344USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B344. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.4V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B345ERprinted 3B345USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B345. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.5V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B346ERprinted 3B346USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B346. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.6V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B347ERprinted 3B347USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B347. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.7V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B348ERprinted 3B348USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B348. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.8V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B349ERprinted 3B349USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B349. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 4.9V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC6101B350ERprinted 3B350USP-6CVoltage supervisor, TorexVoltage supervisorTorex
Printed 3B350. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- CMOS-IC: VDet 5.0V5%, Hst, -MR, -Reset PPO, Wt=100ms, Rt=25ms
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
12 more parts have no package on record. Nothing rules them out, so they stay.
SM3KW33CAprinted 3B33TVS diode, ProTek DevicesTVS diodeProTek Devices
Printed 3B33. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- TVS diode
- Maker
- ProTek Devices
- Package
- Not recorded
- Pins
- Not recorded
- Details
- 3000 Watt TVS Component
- Source
- Manufacturer datasheet
Is it dead?
Diode range, from the protected line to ground, part lifted if you can.
Working, it reads
A one-way part reads about 0.6 to 0.8 V forward and open in reverse. A two-way part reads open both ways. Arrays with several lines read as the datasheet's diagram draws them.
Dead, it reads
- From the line to ground, the same reading both ways, near 0 V with a continuous beep: shorted.
- A reading both ways on a one-way part: leaky.
- A one-way part open both ways: failed open.
- On the board
- , a line reading shorted to ground can be this part or anything else on that line. Lift it: if the short goes with it, it has failed.
- Compare:
- The same part on the next line or connector pin is the healthy reading to compare with.
- Watch for:
- A two-way part reads open both ways when it is good, exactly like one that has failed open. The meter cannot tell them apart; an identical part on the next line can.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B303KR-Gprinted 3B303DC-DC converter, TorexDC-DC converterTorex
Printed 3B303. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.0V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B313KR-Gprinted 3B313DC-DC converter, TorexDC-DC converterTorex
Printed 3B313. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.1V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B323KR-Gprinted 3B323DC-DC converter, TorexDC-DC converterTorex
Printed 3B323. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.2V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B333KR-Gprinted 3B333DC-DC converter, TorexDC-DC converterTorex
Printed 3B333. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.3V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B343KR-Gprinted 3B343DC-DC converter, TorexDC-DC converterTorex
Printed 3B343. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.4V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B353KR-Gprinted 3B353DC-DC converter, TorexDC-DC converterTorex
Printed 3B353. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.5V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B363KR-Gprinted 3B363DC-DC converter, TorexDC-DC converterTorex
Printed 3B363. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.6V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B373KR-Gprinted 3B373DC-DC converter, TorexDC-DC converterTorex
Printed 3B373. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.7V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B383KR-Gprinted 3B383DC-DC converter, TorexDC-DC converterTorex
Printed 3B383. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.8V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
XC9802B393KR-Gprinted 3B393DC-DC converter, TorexDC-DC converterTorex
Printed 3B393. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- DC/DC voltage converter IC: PFM pulse skip, st-up, 300kHz, 3.9V±2%, 80mA, +CE
- Source
- Published code list
Is it dead?
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
AONP38324printed 38324MOSFET, Alpha & Omega SemiconductorMOSFETAlpha & Omega Semiconductor
Printed 38324. Only the start matches what you typed, so this fits only if the rest of the marking is worn off.
- What it is
- MOSFET
- Maker
- Alpha & Omega Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Low-voltage (12-30 V) MOSFET
- Source
- Manufacturer datasheet
Is it dead?
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
One way between drain and source reads about 0.4 to 0.9 V, the body diode, and the other way open. The gate reads open to both other pins.
Dead, it reads
- Drain to source the same both ways, near 0 V with a continuous beep, and still so after shorting gate to source: shorted. The classic failure.
- The gate reads low to source or drain: gate shorted.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, which reads as that resistor and is not a fault. Lift a leg to be sure.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- The diode range can charge the gate enough to turn the part on, and then drain to source reads near 0 both ways on a good part. Short gate to source and test again before you condemn it.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
6 more parts are not listed here. Type more of the code to narrow the list.
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One code, several parts
Marking codes are not unique. In the standard code book, 6H on a SOT-23 is an NPN transistor, a varicap, an N-channel JFET, two digital transistors, a 3.6 V voltage detector: six parts from five makers. So a search on WhatSMD (What SMD) shows the parts we hold under that code and under codes easily misread as it, with only the columns that tell them apart.
- NPN transistor
- Varicap
- N-channel JFET
- Digital transistor ×2
- 3.6 V voltage detector
When more than one is left
Tap Help me choose. Up to 4 quick answers: whether the part has failed, then what separates the parts left. Those get ranked with the reasoning and a test that settles it. That uses one identification: 2 a month are free without an account, and 3 with a free account.
When you cannot read it
Tap the camera in the field. We read the characters, keep the ones we are unsure of, and search every reading. A photo too soft to read is turned back on your phone first; if it is the only one you can get, you can still send it.
Get the app
The same search on your phone, and a camera with a light, zoom and tap to focus for a marking you cannot read. Sign in with your email address to use the same account.
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