SMD code D93
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.
14 parts are printed D93
Not sure which one you have?
Answer up to 4 quick questions and these 14 parts are ranked, with a meter test that settles it. It works on a dead part too.
AD5246SOT-3236 pins, Analog DevicesNot recordedSOT-3236 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-323
- Pins
- 6
- Details
- 128-Position I2C-Compatible Digital Resistor
- Source
- Published code list
Is it dead? The meter test is below: Resistor.
AD5246BKSZ5-RL7SOT-3636 pins, Analog DevicesNot recordedSOT-3636 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-363
- Pins
- 6
- Source
- Published code list
Is it dead? The meter test is below: This part.
BCV61BSOT-143NPN transistor, 4 pins, NexperiaNPN transistorSOT-1434 pinsNexperia
- What it is
- NPN transistor
- Maker
- Nexperia
- Package
- SOT-143
- Pins
- 4
- Details
- 30V, 0.1A, Medium Power NPN Bipolar Transistor
- Source
- An older or alternative marking, from a published code list
Is it dead? The meter test is below: NPN transistor.
HE61CC3902MRSOT-23Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-233 pinsHeermicr Semicconductor
- What it is
- Voltage supervisor
- Maker
- Heermicr Semicconductor
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7039HCMRSOT-23Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-233 pinsHeermicr Semicconductor
- What it is
- Voltage supervisor
- Maker
- Heermicr Semicconductor
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO, Hst.
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7039MCM5RSOT-23-5Voltage supervisor, 5 pins, Heermicr SemicconductorVoltage supervisorSOT-23-55 pinsHeermicr Semicconductor
- What it is
- Voltage supervisor
- Maker
- Heermicr Semicconductor
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7039MCNRSOT-23Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-233 pinsHeermicr Semicconductor
- What it is
- Voltage supervisor
- Maker
- Heermicr Semicconductor
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7039MCPRSOT-89Voltage supervisor, 3 pins, Heermicr SemicconductorVoltage supervisorSOT-893 pinsHeermicr Semicconductor
- What it is
- Voltage supervisor
- Maker
- Heermicr Semicconductor
- Package
- SOT-89
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
TC53C3902ECTSOT-23-5Voltage supervisor, 5 pins, MicrochipVoltage supervisorSOT-23-55 pinsMicrochip
- What it is
- Voltage supervisor
- Maker
- Microchip
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 3.9V±2%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CC3902MSOT-233 pins, TorexNot recordedSOT-233 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- SOT-23
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 3,9V, Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CC3902PSOT-893 pins, TorexNot recordedSOT-893 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- SOT-89
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 3,9V, Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CC3945MRSOT-23Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-233 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CC3945PRSOT-89Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-893 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-89
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
1 more part has no package on record
XC61GC3902HRVoltage supervisor, TorexVoltage supervisorNot recordedNot recordedTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.9V±2%, +Reset PPO
- 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.
Resistor
Ohms range, across it, power off.
Working, it reads
Its marked value, within tolerance. On the board it reads the same or lower, because everything around it sits in parallel.
Dead, it reads
- Open: burnt, cracked, or eaten through by sulphur. The commonest failure.
- Well above its marked value: drifted high.
- On the board, clearly higher than its marked value: it has failed, since the board can only pull a reading down.
- On the board:
- A reading lower than marked on the board proves nothing; lift one end. A reading higher than marked is a fault even on the board.
- Compare:
- The same position on another channel usually carries the same value, and so does the matching part on another board.
- Watch for:
- A burnt resistor usually means the part it feeds pulled too much. Find that before fitting a new one, or it burns too. The marking, not the reading, says what to fit.
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.
NPN transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Red probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
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.
Printed with a code easy to misread as D93
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 D93
For a marking with its end worn or burnt off. Each code has a page of its own.
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