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SMD code PS 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 PS

Not sure which one you have?

Answer up to 4 quick questions and these 30 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • 74LVCE1G00W5SOT-23-55 pins, Diodes IncorporatedNot recorded5 pinsDiodes Incorporated
    What it is
    Not recorded
    Maker
    Diodes Incorporated
    Package
    SOT-23-5
    Pins
    5
    Details
    CMOS logic IC: 2-input NAND gate
    Source
    Published code list

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

  • PT7M7043CHTASOT-23-5Voltage supervisor, 5 pins, Pericom TechnologyVoltage supervisor5 pinsPericom Technology
    What it is
    Voltage supervisor
    Maker
    Pericom Technology
    Package
    SOT-23-5
    Pins
    5
    Details
    Voltage detector IC: 4.3V±1.5%, +Reset PPO
    Source
    Published code list

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

  • PT7M7043CHTAESOT-23-5Voltage supervisor, 5 pins, Pericom TechnologyVoltage supervisor5 pinsPericom Technology
    What it is
    Voltage supervisor
    Maker
    Pericom Technology
    Package
    SOT-23-5
    Pins
    5
    Details
    Voltage detector IC: 4.3V±1.5%, +Reset PPO, L-Free
    Source
    Published code list

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

  • 12 more parts have no package on record. Nothing rules them out, so they stay.
    • BAR64-06/WPIN diode, InfineonPIN diodeNot recordedInfineon
      What it is
      PIN diode
      Maker
      Infineon
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: PIN diode or varicap.

      Datasheetfor BAR64-06/W, opens in a new tab
    • 74AUP1G07GFNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74AUP1G07GMNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74AUP1G07GNNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74AUP1G07GSNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74AUP1G07GWNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74AUP1G07GXNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Noninverting buffer/driver (ODO)
      Source
      Published code list

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

    • 74LVCE1G00FZ4Diodes IncorporatedNot recordedNot recordedDiodes Incorporated
      What it is
      Not recorded
      Maker
      Diodes Incorporated
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: 2-input NAND gate
      Source
      Published code list

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

    • AX6644YCTLDO regulator, AXElite TechnologyLDO regulatorNot recordedAXElite Technology
      What it is
      LDO regulator
      Maker
      AXElite Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, Dual out., Vo1/Vo2=2.8V/1.5V±2%, 200mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

    • AX6645PCTLDO regulator, AXElite TechnologyLDO regulatorNot recordedAXElite Technology
      What it is
      LDO regulator
      Maker
      AXElite Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, Dual out., Vo1/Vo2=1.8V/3.0V±2%, 200mA, +CE
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

    • BD5256FVEVoltage supervisor, ROHMVoltage supervisorNot recordedROHM
      What it is
      Voltage supervisor
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 5,6V, Reset Open drain output
      Source
      Published code list

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

    • BD5256GVoltage supervisor, ROHMVoltage supervisorNot recordedROHM
      What it is
      Voltage supervisor
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 5,6V, Reset Open drain output
      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.

PIN diode or varicap

Diode range, part lifted or one leg off the pad. Red probe on the anode.

Working, it reads

About 0.6 to 0.9 V anode to cathode, 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.
  • 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 varicap that has drifted in capacitance reads normal on a meter. Only a capacitance meter or the tuning itself shows it.

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.

Printed with a code easy to misread as PS

One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.

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