SMD code 8043- in SOT-23-5
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.
Not sure which one you have?
Answer up to 4 quick questions and these 9 parts are ranked, with a meter test that settles it. It works on a dead part too.
Nothing is printed exactly 8043-
These parts are printed with a character that is easy to misread as what you typed. The odd one out is marked on each.
all SOT-23-5, 5 pins. What differs:
EHP8043-15VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-18VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-25VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-30VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-33VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-36VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
EHP8043-50VF05NRRprinted 8043-SOT-23-5LDO regulator, ESMTLDO regulatorESMT
Printed 8043- on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- LDO regulator
- Maker
- ESMT
- Package
- SOT-23-5
- Pins
- 5
- Details
- Competitive LDO, 400 mA output, input 2.7 to 18 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
SN74AHCT1G04DBVprinted B043SOT-23-5Logic gate, Texas InstrumentsLogic gateTexas Instruments
Printed B043 on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- Logic gate
- Maker
- Texas Instruments
- Package
- SOT-23-5
- Pins
- 5
- Details
- Single Inverter Gate
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
R3117Q492Cprinted B043SOT-23-5Voltage supervisor, RicohVoltage supervisorRicoh
Printed B043 on the part. Easy to misread as 8043-. Check that character with a loupe before you order anything.
- What it is
- Voltage supervisor
- Maker
- Ricoh
- Package
- SOT-23-5
- Pins
- 5
- Details
- Voltage detector IC: 4.9V±1%, -Reset PPO, Sense
- 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.
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.
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.
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