SMD code TS in SOT-323
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.
8 parts in SOT-323 are printed TS
Not sure which one you have?
Answer up to 4 quick questions and these 27 parts are ranked, with a meter test that settles it. It works on a dead part too.
2SC4102-SSOT-323NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- 120V, 0.05A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
NTS2101PSOT-323P-channel MOSFET, 3 pins, onsemiP-channel MOSFET3 pinsonsemi
- What it is
- P-channel MOSFET
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Details
- MOSFET - Power, Single, P - Channel, SC - 70
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
T2SC4102-SSOT-323NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- 120V, 0.05A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SA1603-SSOT-3233 pins, MitNot recorded3 pinsMit
- What it is
- Not recorded
- Maker
- Mit
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp: AF, 50V, 100mA, 150mW, 200MHz, B=270..560
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SC3929ASOT-323NPN transistor, 3 pins, PanasonicNPN transistor3 pinsPanasonic
- What it is
- NPN transistor
- Maker
- Panasonic
- Package
- SOT-323
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC3929A-SSOT-3233 pins, PanNot recorded3 pinsPan
- What it is
- Not recorded
- Maker
- Pan
- Package
- SOT-323
- Pins
- 3
- Details
- Si-npn: AF, LN, 55V, 50mA, 150mW, B=260..520, 80MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SC4102SSOT-3233 pins, ROHMNot recorded3 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- equivalent 2SC2389SS
- Source
- Published code list
Is it dead? The meter test is below: This part.
CAT810TSDI-GT3SOT-323Voltage supervisor, 3 pins, onsemiVoltage supervisor3 pinsonsemi
- What it is
- Voltage supervisor
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Details
- Voltage detector IC: 3.08V±1.5%, +Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
7 more parts have no package on record. Nothing rules them out, so they stay.
BAT54-04Schottky diode, InfineonSchottky diodeNot recordedInfineon
- What it is
- Schottky diode
- Maker
- Infineon
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
1SMA78ATVS diode, onsemiTVS diodeNot recordedonsemi
- What it is
- TVS diode
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- TVS: 78V±5%, 3.2A, 400W (1ms)
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
2SA1530APNP transistorPNP transistorNot recordedNot recorded
- What it is
- PNP transistor
- Maker
- Not recorded
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
2SC4102NPN transistorNPN transistorNot recordedNot recorded
- What it is
- NPN transistor
- Maker
- Not recorded
- Package
- Not recorded
- Pins
- Not recorded
- Details
- NPN High-Voltage Amplifier Transistor
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC5437NPN transistor, RenesasNPN transistorNot recordedRenesas
- What it is
- NPN transistor
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
74LVC1T45FZ4Diodes IncorporatedNot recordedNot recordedDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Dual supply translating transceiver with 3-state output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
BAT54M1PTChenmko EnterpriseNot recordedNot recordedChenmko Enterprise
- What it is
- Not recorded
- Maker
- Chenmko Enterprise
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Diode: SBD, 30V, 200mA, Vf<1V(100mA), 5ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon 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.
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.
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.
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.
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.
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.
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.
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.
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.
Printed with a code easy to misread as TS
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes not listed here are printed on 11 more parts.
Did you find your part?
Open this in the search to correct a character or try another package.