SMD code T2p
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.
The last letter, p, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and T2 was searched.
94 parts are printed T2p
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.
PUMD14SOT-363Digital transistor (PNP, resistors built in), 6 pins, NexperiaDigital transistor (PNP, resistors built in)SOT-3636 pinsNexperia
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- Nexperia
- Package
- SOT-363
- Pins
- 6
- Details
- 50 V, 100 mA NPN/PNP resistor-equipped transistor; R1 = 47 kΩ, R2 = open
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
SM220FLSOD-123FSchottky diode, 2 pins, SeCoSSchottky diodeSOD-123F2 pinsSeCoS
- What it is
- Schottky diode
- Maker
- SeCoS
- Package
- SOD-123F
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
TBAV20LSOD-882Switching diode, 2 pins, Galaxy MicroelectronicsSwitching diodeSOD-8822 pinsGalaxy Microelectronics
- What it is
- Switching diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-882
- Pins
- 2
- Details
- 0.2A, 150V, Surface Mount Small Signal Switching Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
TBAV20WSSOD-323Switching diode, 2 pins, Galaxy MicroelectronicsSwitching diodeSOD-3232 pinsGalaxy Microelectronics
- What it is
- Switching diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-323
- Pins
- 2
- Details
- 0.2A, 150V, Surface Mount Small Signal Switching Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
UMT2NSOT-363PNP transistor, 6 pins, JSCJPNP transistorSOT-3636 pinsJSCJ
- What it is
- PNP transistor
- Maker
- JSCJ
- Package
- SOT-363
- Pins
- 6
- Details
- Bipolar transistor, PNP
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
ESD1006B7V0SOD-882ESD protection diode, 2 pins, YFWESD protection diodeSOD-8822 pinsYFW
- What it is
- ESD protection diode
- Maker
- YFW
- Package
- SOD-882
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
1PS79SB17SOD-523Schottky diode, 2 pins, PhilipsSchottky diodeSOD-5232 pinsPhilips
- What it is
- Schottky diode
- Maker
- Philips
- Package
- SOD-523
- Pins
- 2
- Details
- Diode: Schottky, Sw, 4V, 30mA, Vf<0.6V(10mA), <0.65pF
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
2SK242-2SOT-233 pins, Sanyo ElectricNot recordedSOT-233 pinsSanyo Electric
- What it is
- Not recorded
- Maker
- Sanyo Electric
- Package
- SOT-23
- Pins
- 3
- Details
- n-FET: AF-Amp, 20V, 20mA, 250mW, Idss=0.6..1,5mA, Ciss=4pF
- Source
- Published code list
Is it dead? The meter test is below: MOSFET.
ADT6503SRJZP015RL7SOT-23-55 pins, Analog DevicesNot recordedSOT-23-55 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-23-5
- Pins
- 5
- Source
- Published code list
Is it dead? The meter test is below: This part.
6 more parts have no package on record
NTB0102GFLogic level translator, 8 pins, NXPLogic level translatorNot recorded8 pinsNXP
- What it is
- Logic level translator
- Maker
- NXP
- Package
- Not recorded
- Pins
- 8
- Details
- 1 General description 2 Features and benefits 3 Ordering information
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
NTB0102JKLogic level translator, 8 pins, NXPLogic level translatorNot recorded8 pinsNXP
- What it is
- Logic level translator
- Maker
- NXP
- Package
- Not recorded
- Pins
- 8
- Details
- 1 General description 2 Features and benefits 3 Ordering information
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
S-LNP2010DT2AGP-channel MOSFET, LRCP-channel MOSFETNot recordedNot recordedLRC
- What it is
- P-channel MOSFET
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MOSFET, Complementary N&P-Channel, VDSS 20 V, VGS 12 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
SN74LVC2T45DCULogic level translator, 8 pins, Texas InstrumentsLogic level translatorNot recorded8 pinsTexas Instruments
- What it is
- Logic level translator
- Maker
- Texas Instruments
- Package
- Not recorded
- Pins
- 8
- Details
- Dual-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
TST12-521WSchottky diode, Taitron ComponentsSchottky diodeNot recordedNot recordedTaitron Components
- What it is
- Schottky diode
- Maker
- Taitron Components
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Schottky Barrier Diodes (Multiple Terminals)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
VS15VUD1HSESD protection diode, ROHMESD protection diodeNot recordedNot recordedROHM
- What it is
- ESD protection diode
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Transient Voltage Suppressor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
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.
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.
Digital transistor
Ohms range, part lifted. The datasheet gives the built-in resistors: R1 in series with the base, R2 from base to emitter.
Working, it reads
Base to emitter reads about R1 plus R2 either way round, about 20 kΩ on a 10 k and 10 k part, give or take their wide tolerance. Collector to emitter reads open. A part with no R2 reads a junction behind R1 one way instead.
Dead, it reads
- Collector to emitter the same both ways, near 0 Ω with a continuous beep: shorted.
- From the base, open or far above R1 plus R2: R1 has failed. Static damage shows here most often.
- Base to emitter near 0 Ω: failed short.
- 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:
- The readings depend on the resistor values, so an identical part elsewhere on the board is the surest reference. Measure it the same way.
- Watch for:
- On the diode range a good part with 10 kΩ resistors reads open on every pair, so a good part looks dead there. Use the ohms range.
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.
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.
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.
TVS or ESD protection diode
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.
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.
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.
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