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SMD code 02 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.

3 parts in SOT-23-5 are printed 02

Not sure which one you have?

Answer up to 4 quick questions and these 37 parts are ranked, with a meter test that settles it. It works on a dead part too.

15 parts have no package on record. Nothing rules them out, so they stay.

  • SGM8188A1XGCurrent sense amplifier, 4 pins, SG MicroCurrent sense amplifier4 pinsSG Micro
    What it is
    Current sense amplifier
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    4
    Details
    Tiny Package, Nano-Power, Precision Current-Sense Amplifier
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM8188A1XG, opens in a new tab
  • SGM8193A3XGCurrent sense amplifier, 4 pins, SG MicroCurrent sense amplifier4 pinsSG Micro
    What it is
    Current sense amplifier
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    4
    Details
    Tiny Packages, Nano-Power, Precision Current-Sense Amplifier
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM8193A3XG, opens in a new tab
  • SGM8715-1.2XGComparator, 4 pins, SG MicroComparator4 pinsSG Micro
    What it is
    Comparator
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    4
    Details
    WLCSP Package, Low Power Comparator with Precision Voltage Reference
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM8715-1.2XG, opens in a new tab
  • SGM13005H2YUEC6G6 pins, SG MicroNot recorded6 pinsSG Micro
    What it is
    Not recorded
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    6
    Details
    Low Noise Amplifier with Bypass Switch for LTE High Band
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM13005H2YUEC6G, opens in a new tab
  • SGM61020PSXKB6GDC-DC converter, 6 pins, SG MicroDC-DC converter6 pinsSG Micro
    What it is
    DC-DC converter
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    6
    Details
    2A High Efficiency Synchronous Buck Converter
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM61020PSXKB6G, opens in a new tab
  • SGM66099A-5.0XGDC-DC converter, 6 pins, SG MicroDC-DC converter6 pinsSG Micro
    What it is
    DC-DC converter
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    6
    Details
    Synchronous Boost Converter with Ultra-Low Quiescent Current
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SGM66099A-5.0XG, opens in a new tab
  • SGMNE20220TUEM3GN-channel MOSFET, 3 pins, SG MicroN-channel MOSFET3 pinsSG Micro
    What it is
    N-channel MOSFET
    Maker
    SG Micro
    Package
    Not recorded
    Pins
    3
    Details
    20V, Power, Single N-Channel, UTDFN Package, MOSFET
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: N-channel MOSFET.

    Datasheetfor SGMNE20220TUEM3G, opens in a new tab
  • SM1902NSQGN-channel MOSFET, Sinopower SemiconductorN-channel MOSFETNot recordedSinopower Semiconductor
    What it is
    N-channel MOSFET
    Maker
    Sinopower Semiconductor
    Package
    Not recorded
    Pins
    Not recorded
    Details
    30 V, 1 A N-channel MOSFET
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: N-channel MOSFET.

    Datasheetfor SM1902NSQG, opens in a new tab
  • AP8822C-42GIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
    What it is
    Voltage supervisor
    Maker
    Anwell Semiconductor
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, 200ms Rt delay, H-free
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • AP8822C-42GSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
    What it is
    Voltage supervisor
    Maker
    Anwell Semiconductor
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, 200ms Rt delay, H-free
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • AP8822C-42PIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
    What it is
    Voltage supervisor
    Maker
    Anwell Semiconductor
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, 200ms Rt delay
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • AP8822C-42PSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
    What it is
    Voltage supervisor
    Maker
    Anwell Semiconductor
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, 200ms Rt delay
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • DTCC114TNot recordedNot recordedNot recorded
    What it is
    Not recorded
    Maker
    Not recorded
    Package
    Not recorded
    Pins
    Not recorded
    Details
    50V 100mA npn sw + 10k base res
    Source
    Published code list

    Is it dead? The meter test is below: This part.

  • EC95810C42C7IVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
    What it is
    Voltage supervisor
    Maker
    E-CMOS
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, Td=200ms
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • EC95810C42C7SVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
    What it is
    Voltage supervisor
    Maker
    E-CMOS
    Package
    Not recorded
    Pins
    Not recorded
    Details
    Voltage detector IC: 4.2V±2%, -Reset PPO, Td=200ms
    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.

N-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 source, black on the drain: 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. A drain short can be the load. 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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