SMD code C93
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.
13 parts are printed C93
Not sure which one you have?
Answer up to 4 quick questions and these 13 parts are ranked, with a meter test that settles it. It works on a dead part too.
BCV62BSOT-143Dual PNP transistor, 4 pins, NexperiaDual PNP transistorSOT-1434 pinsNexperia
- What it is
- Dual PNP transistor
- Maker
- Nexperia
- Package
- SOT-143
- Pins
- 4
- Details
- 30V, 0.1A, General Purpose PNP Bipolar Transistor
- Source
- An older or alternative marking, from a published code list
Is it dead? The meter test is below: PNP transistor pair.
HE61CC2902MRSOT-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: 2.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7029HCMRSOT-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: 2.9V±2%, +Reset PPO, Hst.
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7029MCM5RSOT-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: 2.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7029MCNRSOT-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: 2.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HE7029MCPRSOT-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: 2.9V±2%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
SST4393SOT-233 pins, MicrochipNot recordedSOT-233 pinsMicrochip
- What it is
- Not recorded
- Maker
- Microchip
- Package
- SOT-23
- Pins
- 3
- Details
- n-FET: Sw, Chopper, 40V, Idss=5mA, 350mW, Up<3V
- Source
- Published code list
Is it dead? The meter test is below: MOSFET.
TC53C2902ECTSOT-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: 2.9V±2%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CC2902MSOT-233 pins, TorexNot recordedSOT-233 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- SOT-23
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 2,9V, Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC61CC2902PSOT-893 pins, TorexNot recordedSOT-893 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- SOT-89
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 2,9V, Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CC2945MRSOT-23Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-233 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 2.9V±2%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XE61CC2945PRSOT-89Voltage supervisor, 3 pins, TorexVoltage supervisorSOT-893 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-89
- Pins
- 3
- Details
- Voltage detector IC: 2.9V±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
XC61GC2902HRVoltage supervisor, TorexVoltage supervisorNot recordedNot recordedTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 2.9V±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.
PNP transistor pair
Diode range, part lifted. Test each transistor on its own pins, as the datasheet's pinout gives them.
Working, it reads
Black 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.
MOSFET
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.
Printed with a code easy to misread as C93
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 C93
For a marking with its end worn or burnt off. Each code has a page of its own.
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