SMD code -P3
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.
87 parts are printed -P3
Not sure which one you have?
Answer up to 4 quick questions and these 50 parts are ranked, with a meter test that settles it. It works on a dead part too.
PPM3FD20V1ELNSOT-883P-channel MOSFET, 3 pins, PrisemiP-channel MOSFETSOT-8833 pinsPrisemi
- What it is
- P-channel MOSFET
- Maker
- Prisemi
- Package
- SOT-883
- Pins
- 3
- Details
- MOSFET, P-channel, 20 V, 0.8 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
PPM723T201E0LSOT-723P-channel MOSFET, 3 pins, PrisemiP-channel MOSFETSOT-7233 pinsPrisemi
- What it is
- P-channel MOSFET
- Maker
- Prisemi
- Package
- SOT-723
- Pins
- 3
- Details
- MOSFET, P-channel, 20 V, 0.8 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
2SK1577-3SOT-233 pins, SonyNot recordedSOT-233 pinsSony
- What it is
- Not recorded
- Maker
- Sony
- Package
- SOT-23
- Pins
- 3
- Details
- FET n-type: VHF/UHF, 35V, 100mA, 150mW, Idss=60..80mA, Up<6V
- Source
- Published code list
Is it dead? The meter test is below: MOSFET.
BB133SOD-3232 pins, PhiNot recordedSOD-3232 pinsPhi
- What it is
- Not recorded
- Maker
- Phi
- Package
- SOD-323
- Pins
- 2
- Details
- VHF Varicap 2,5-18,5pF
- Source
- Published code list
Is it dead? The meter test is below: PIN diode or varicap.
BFS44SOT-3233 pins, Diodes IncorporatedNot recordedSOT-3233 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp: AF/HF, 60/30V, 1A, >60MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
BZD27C27PWSOD-123WZener diode, 2 pins, Taiwan SemiconductorZener diodeSOD-123W2 pinsTaiwan Semiconductor
- What it is
- Zener diode
- Maker
- Taiwan Semiconductor
- Package
- SOD-123W
- Pins
- 2
- Details
- Zener diode: 25.1..28.9V, Zzt=7, Izt=25mA, 1W
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
BZX84-C13TSOT-5233 pins, Diodes IncorporatedNot recordedSOT-5233 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-523
- Pins
- 3
- Details
- Z-diode: 13V±5%, 150mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BZX84-C13TSSOT-3636 pins, Diodes IncorporatedNot recordedSOT-3636 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-363
- Pins
- 6
- Details
- Z-diode: Triple, 3x13V±5%, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
7 more parts have no package on record
PU2BMHRectifier, Taiwan SemiconductorRectifierNot recordedNot recordedTaiwan Semiconductor
- What it is
- Rectifier
- Maker
- Taiwan Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
S-LBTP180D3T1GPNP transistor, LRCPNP transistorNot recordedNot recordedLRC
- What it is
- PNP transistor
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Bipolar transistor, PNP, IC 1000 mA, VCEO 85 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
S-LBTP180D3T1G-SPNP transistor, LRCPNP transistorNot recordedNot recordedLRC
- What it is
- PNP transistor
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Bipolar transistor, PNP, IC 1000 mA, VCEO 85 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
SCN-2-19+RF power splitter, Mini-CircuitsRF power splitterNot recordedNot recordedMini-Circuits
- What it is
- RF power splitter
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- RF power splitter/combiner, 1425-1900 MHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: This part.
APM8600Battery charger, Diodes IncorporatedBattery chargerNot recordedNot recordedDiodes Incorporated
- What it is
- Battery charger
- Maker
- Diodes Incorporated
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Single Cell Linear Lithium Battery Charger with 28V OVP and Programable Charge Timer
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
BD46E441G-MVoltage supervisor, ROHMVoltage supervisorNot recordedNot recordedROHM
- What it is
- Voltage supervisor
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 4.4V±1%, -MR, -Reset PPO, Rdt=100ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
BFG403WNPN transistor, NXPNPN transistorNot recordedNot recordedNXP
- What it is
- NPN transistor
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- npn RF ft 17GHz 4.5V 3mA
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
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.
Silicon diode
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.5 to 0.8 V anode to cathode, and open the other way. Small switching diodes read about 0.6 to 0.7 V; large rectifiers can read a little lower.
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: failed open.
- A reading the wrong way round as well: 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 three-pin body can hold two diodes. With a common pin they read two junctions from that pin, just like a transistor; in series they read two drops end to end. Test each pair the datasheet names.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
PNP transistor
Diode range, part lifted or its base leg off the pad.
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.
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.
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.
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.
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.
PIN diode or varicap
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.6 to 0.9 V anode to cathode, 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.
- 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 varicap that has drifted in capacitance reads normal on a meter. Only a capacitance meter or the tuning itself shows it.
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.
Zener diode
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.
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