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SMD code GA5 in SSOP

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.

1 part in SSOP is printed GA5

Not sure which one you have?

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

  • LM4990MMSSOPNational SemiconductorNational Semiconductor
    What it is
    Not recorded
    Maker
    National Semiconductor
    Package
    SSOP
    Pins
    Not recorded
    Details
    Linear IC: APA, BTL, 2.5..5.5V, 1.25W(5V/8), shutdown
    Source
    Published code list

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

  • 3 more parts have no package on record. Nothing rules them out, so they stay.
    • LM4915LQNational SemiconductorNational Semiconductor
      What it is
      Not recorded
      Maker
      National Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Lin-IC: AF PA, BTL, 2,2..5,5V, 90mW(5V/32Ω), shutdown
      Source
      Published code list

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

    • SH4990MMSitech SemiconductorsSitech Semiconductors
      What it is
      Not recorded
      Maker
      Sitech Semiconductors
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear IC: APA, BTL, 2.2..5.5V, 2W(5V/4), select shutdown
      Source
      Published code list

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

    • TC7PG04AFEToshibaToshiba
      What it is
      Not recorded
      Maker
      Toshiba
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Dual inverter
      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.

Printed with a code easy to misread as GA5

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

Did you find your part?

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