SMD code P3B
Marking codes are not standardised, and the same code is reused by unrelated makers for unrelated parts. Below is every part in our tables printed with it, and any printed with a code that is easy to misread as it, from the manufacturers' own marking tables and published code lists.
15 parts are printed P3B
Not sure which one you have?
Answer up to 4 quick questions and these 15 parts are ranked, with a meter test that settles it. It works on a dead part too.
AMC03HD10nSMC-FLSchottky diode, 2 pins, ShindengenSchottky diodenSMC-FL2 pinsShindengen
- What it is
- Schottky diode
- Maker
- Shindengen
- Package
- nSMC-FL
- Pins
- 2
- Details
- Schottky Barrier Diodes 100V, 3A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
AME03HD10SOD-128Schottky diode, 2 pins, ShindengenSchottky diodeSOD-1282 pinsShindengen
- What it is
- Schottky diode
- Maker
- Shindengen
- Package
- SOD-128
- Pins
- 2
- Details
- Schottky Barrier Diodes 100V, 3A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
LP3401BLT1GSOT-23P-channel MOSFET, 3 pins, LRCP-channel MOSFETSOT-233 pinsLRC
- What it is
- P-channel MOSFET
- Maker
- LRC
- Package
- SOT-23
- Pins
- 3
- Details
- MOSFET, P-Channel, VDSS 30 V, VGS 12 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
MC03HD10nSMC-FLSchottky diode, 2 pins, ShindengenSchottky diodenSMC-FL2 pinsShindengen
- What it is
- Schottky diode
- Maker
- Shindengen
- Package
- nSMC-FL
- Pins
- 2
- Details
- Schottky Barrier Diodes 100V, 3A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
ME03HD10SOD-128Schottky diode, 2 pins, ShindengenSchottky diodeSOD-1282 pinsShindengen
- What it is
- Schottky diode
- Maker
- Shindengen
- Package
- SOD-128
- Pins
- 2
- Details
- Schottky Barrier Diodes 100V, 3A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
IXD5108N43BMRSOT-23-5Voltage supervisor, 5 pins, IXYSVoltage supervisorSOT-23-55 pinsIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 4.3V±2%, -Reset ODO, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD5118C33BMR-GSOT-23-5Voltage supervisor, 5 pins, IXYSVoltage supervisorSOT-23-55 pinsIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 3.3V±2%, ±Reset PPO, Sense, Hst <1%, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
PBSS4120TSOT-233 pins, NexperiaNot recordedSOT-233 pinsNexperia
- What it is
- Not recorded
- Maker
- Nexperia
- Package
- SOT-23
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
XC6108N43BMRSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- CMOS-IC: Voltage Detector 4,3V, -Reset Open drain output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6118C33BMR-GSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 3.3V±2%, ±Reset PPO, Sense, Hst <1%, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6368E313MRSOT-23-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-23-55 pinsTorex
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- DC/DC voltage converter IC: PWM/PFM st-up, 3.1V±2.5%, 200mA, 300kHz, +CE
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
4 more parts have no package on record
IXD5108N43BGRVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 4.3V±2%, -Reset ODO, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD5118C33BGR-GVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.3V±2%, ±Reset PPO, Sense, Hst. <1%, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6108N43BGRVoltage supervisor, TorexVoltage supervisorNot recordedNot recordedTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS-IC: Voltage Detector 4,3V, -Reset Open drain output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6118C33BGR-GVoltage supervisor, TorexVoltage supervisorNot recordedNot recordedTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.3V±2%, ±Reset PPO, Sense, Hst. <1%, Cd
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
Is it dead? One meter test per kind
Parts of the same kind are tested the same way, so each test is here once. Each part above points to its own.
Schottky diode
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.15 to 0.45 V anode to cathode, roughly half a silicon diode, and open the other way.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- A reading the wrong way round as well: leaky.
- Open both ways: failed open.
- 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 large Schottky can read about 0.1 V forward and beep like a short, and leaks a little the wrong way when good, more when warm. It is shorted only if it reads the same both ways. Measure it cold, beside an identical cold one.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
P-channel MOSFET
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
Red probe on the drain, black on the source: about 0.4 to 0.9 V, the body diode. Open the other way. The gate reads open to both other pins, both ways.
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. Often all three pins end up shorted together.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, so gate to source reads that resistor, which 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.
Integrated circuit
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.
This part
Diode range and ohms range, part lifted.
Working, it reads
Depends on what it is. The datasheet, or an identical part, says.
Dead, it reads
- Between two pins, the same reading both ways, near 0 V with a continuous beep: shorted.
- Open between every pair of pins: failed open, or a part that reads open when working.
- 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.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
Printed with a code easy to misread as P3B
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes that begin with P3B
For a marking with its end worn or burnt off. Each code has a page of its own.
Codes not listed here are printed on 38 more parts.
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