SMD code H0-
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.
110 parts are printed H0-
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.
TUMH13NSOT-363Digital transistor (NPN, resistors built in), 6 pins, Galaxy MicroelectronicsDigital transistor (NPN, resistors built in)SOT-3636 pinsGalaxy Microelectronics
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- Galaxy Microelectronics
- Package
- SOT-363
- Pins
- 6
- Details
- 50V, 100mA, NPN Bipolar Digital Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
UMH13NSOT-363Digital transistor (resistors built in), 6 pins, Galaxy MicroelectronicsDigital transistor (resistors built in)SOT-3636 pinsGalaxy Microelectronics
- What it is
- Digital transistor (resistors built in)
- Maker
- Galaxy Microelectronics
- Package
- SOT-363
- Pins
- 6
- Details
- 50V, 100mA, PNP Bipolar Digital Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
2SC4252SOT-323RF transistor, 3 pins, ToshibaRF transistorSOT-3233 pinsToshiba
- What it is
- RF transistor
- Maker
- Toshiba
- Package
- SOT-323
- Pins
- 3
- Details
- Si-npn: VHF-Osc, 20V, 30mA, 100mW, B=40..250, 2,1GHz
- Source
- Published code list
Is it dead? The meter test is below: Bipolar transistor.
2SC4255SOT-23RF transistor, 3 pins, ToshibaRF transistorSOT-233 pinsToshiba
- What it is
- RF transistor
- Maker
- Toshiba
- Package
- SOT-23
- Pins
- 3
- Details
- Si-npn: TV-VHF, 20V, 30mA, 2GHz
- Source
- Published code list
Is it dead? The meter test is below: Bipolar transistor.
AP130-27RSOT-233 pins, AnachipNot recordedSOT-233 pinsAnachip
- What it is
- Not recorded
- Maker
- Anachip
- Package
- SOT-23
- Pins
- 3
- Details
- VR-IC: LDO, 2,7V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
AP130-27YRSOT-893 pins, AnachipNot recordedSOT-893 pinsAnachip
- What it is
- Not recorded
- Maker
- Anachip
- Package
- SOT-89
- Pins
- 3
- Details
- VR-IC: LDO, 2,7V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EUK30-TRSOT-23-5LDO regulator, 5 pins, Broadchip Technology GroupLDO regulatorSOT-23-55 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 3.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EUK50-TRSOT-23-5LDO regulator, 5 pins, Broadchip Technology GroupLDO regulatorSOT-23-55 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 5.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EUR30-TRSOT-23LDO regulator, 3 pins, Broadchip Technology GroupLDO regulatorSOT-233 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 3.0V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EUR50-TRSOT-23LDO regulator, 3 pins, Broadchip Technology GroupLDO regulatorSOT-233 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 5.0V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EXK30-TRSOT-353LDO regulator, 5 pins, Broadchip Technology GroupLDO regulatorSOT-3535 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 3.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014EXK50-TRSOT-353LDO regulator, 5 pins, Broadchip Technology GroupLDO regulatorSOT-3535 pinsBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 5.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BL8555-20HQSOT-353LDO regulator, 5 pins, Shanghai BellingLDO regulatorSOT-3535 pinsShanghai Belling
- What it is
- LDO regulator
- Maker
- Shanghai Belling
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.0V±2%, 400mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
2 more parts have no package on record
BCT2014ELS30-TRLDO regulator, Broadchip Technology GroupLDO regulatorNot recordedNot recordedBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 3.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BCT2014ELS50-TRLDO regulator, Broadchip Technology GroupLDO regulatorNot recordedNot recordedBroadchip Technology Group
- What it is
- LDO regulator
- Maker
- Broadchip Technology Group
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 5.0V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
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.
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.
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.
Bipolar transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
From the base, one probe colour 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.
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.
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