SMD code T23
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.
20 parts are printed T23
Not sure which one you have?
Answer up to 4 quick questions and these 20 parts are ranked, with a meter test that settles it. It works on a dead part too.
HD74LV2GT123AUSSSOPRenesasNot recordedSSOPNot recordedRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- SSOP
- Pins
- Not recorded
- Details
- CMOS logic IC: Retriggerable monostable multivibrator with Schmitt-trigger iInputs
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
KIC77E23T2SOT-23Voltage supervisor, 3 pins, KECVoltage supervisorSOT-233 pinsKEC
- What it is
- Voltage supervisor
- Maker
- KEC
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 2.3V±1%, -Reset ODO, Rdt=400ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
PDTA114TUSOT-3233 pins, NXPNot recordedSOT-3233 pinsNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- SOT-323
- Pins
- 3
- Details
- pnp dtr R1 10k
- Source
- Published code list
Is it dead? The meter test is below: This part.
PDTA123JTSOT-233 pins, NXPNot recordedSOT-233 pinsNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- SOT-23
- Pins
- 3
- Details
- Si-pnp-Digi: Sw, 50V, 100mA, 250mW, R1/R2=2k2/47k
- Source
- Published code list
Is it dead? The meter test is below: This part.
R1162N231DSOT-23-55 pins, RicohNot recordedSOT-23-55 pinsRicoh
- What it is
- Not recorded
- Maker
- Ricoh
- Package
- SOT-23-5
- Pins
- 5
- Details
- VR-IC: LDO, CE, auto discharge, 2.3V±2%, 350mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
RP202N231DSOT-23-5LDO regulator, 5 pins, RicohLDO regulatorSOT-23-55 pinsRicoh
- What it is
- LDO regulator
- Maker
- Ricoh
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.3V±1%, 200mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
STPS230CESOT-223Schottky diode, SGS-Thomson MicroelectronicsSchottky diodeSOT-223Not recordedSGS-Thomson Microelectronics
- What it is
- Schottky diode
- Maker
- SGS-Thomson Microelectronics
- Package
- SOT-223
- Pins
- Not recorded
- Details
- Diode: Dual, SBR, 30V, 1A, Vf<0.55V(1A)
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
TK71523SSOT-233 pins, TokNot recordedSOT-233 pinsTok
- What it is
- Not recorded
- Maker
- Tok
- Package
- SOT-23
- Pins
- 3
- Details
- VR-IC: LDO, 2,3V±1,5%, 155mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
XC31BPN23AMSOT-23-55 pins, TorexNot recordedSOT-23-55 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- CMOS-IC: Temperature Sensor (-30..+80°C); t=25°C- Vout=2,3V±3%
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC31BPN23DMUSP-6B6 pins, TorexNot recordedUSP-6B6 pinsTorex
- What it is
- Not recorded
- Maker
- Torex
- Package
- USP-6B
- Pins
- 6
- Details
- CMOS-IC: Temperature Sensor (-30..+80°C); t=25°C- Vout=2,3V±3%
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6383D231MSOT-23-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-23-55 pinsTorex
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- DC/DC voltage converter IC: PFM st-up, 2.3V±2.5%, 400mA, 100kHz, ext. transistor
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC6383D231PSOT-89-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-89-55 pinsTorex
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- SOT-89-5
- Pins
- 5
- Details
- DC/DC voltage converter IC: PFM st-up, 2.3V±2.5%, 400mA, 100kHz, ext. transis.
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9148B21DER-GUSP-6CDC-DC converter, 6 pins, TorexDC-DC converterUSP-6C6 pinsTorex
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- USP-6C
- Pins
- 6
- Details
- DC/DC voltage converter IC: PWM/PFM st-up, 3.0MHz, 2.1V±2%, 1.4A, CrL, I-O-Bps, +CE
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9148B21DPR-GSOT-89-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-89-55 pinsTorex
- What it is
- DC-DC converter
- Maker
- Torex
- Package
- SOT-89-5
- Pins
- 5
- Details
- DC/DC voltage converter IC: PWM/PFM step-up, 3.0MHz, 2.1V±2%, 1.4A, CrL, I-O-Bps, +CE
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
1 more part has no package on record
KIC77E23M2Voltage supervisor, KECVoltage supervisorNot recordedNot recordedKEC
- What it is
- Voltage supervisor
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 2.3V±1%, -Reset ODO, Rdt=400ms
- 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.
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.
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.
Voltage regulator
Voltage, board powered, black probe on ground. Then ohms with the power off.
Working, it reads
Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.
Dead, it reads
- Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
- Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
- Power off, input to output near 0 Ω: shorted.
- On the board:
- An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
- Compare:
- The same regulator on another rail or another board shows the right voltages and the right resistances.
- Watch for:
- Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.
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.
Printed with a code easy to misread as T23
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 T23
For a marking with its end worn or burnt off. Each code has a page of its own.
Codes not listed here are printed on 18 more parts.
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