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WhatSMDSign in

SMD code 80 in SOT-89

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.

2 parts in SOT-89 are printed 80

Not sure which one you have?

Answer up to 4 quick questions and these 23 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • ELM7540CABSOT-89Voltage supervisor, 3 pins, ELM TechnologyVoltage supervisor3 pinsELM Technology
    What it is
    Voltage supervisor
    Maker
    ELM Technology
    Package
    SOT-89
    Pins
    3
    Details
    Voltage detector IC: 4.0V±2%, +Reset PPO
    Source
    Published code list

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

  • ELM7540NABSOT-89Voltage supervisor, 3 pins, ELM TechnologyVoltage supervisor3 pinsELM Technology
    What it is
    Voltage supervisor
    Maker
    ELM Technology
    Package
    SOT-89
    Pins
    3
    Details
    Voltage detector IC: 4.0V±2%, +Reset ODO
    Source
    Published code list

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

  • 13 more parts have no package on record. Nothing rules them out, so they stay.
    • BZX584B4V7Zener diode, Formosa MicrosemiZener diodeNot recordedFormosa Microsemi
      What it is
      Zener diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: Zener diode.

      Datasheetfor BZX584B4V7, opens in a new tab
    • BZX584B27Zener diode, Formosa MicrosemiZener diodeNot recordedFormosa Microsemi
      What it is
      Zener diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: Zener diode.

      Datasheetfor BZX584B27, opens in a new tab
    • BZX584B30Zener diode, Formosa MicrosemiZener diodeNot recordedFormosa Microsemi
      What it is
      Zener diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: Zener diode.

      Datasheetfor BZX584B30, opens in a new tab
    • BZX584B33Zener diode, Formosa MicrosemiZener diodeNot recordedFormosa Microsemi
      What it is
      Zener diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: Zener diode.

      Datasheetfor BZX584B33, opens in a new tab
    • AD5114BCPZ10-1-RL78 pins, Analog DevicesNot recorded8 pinsAnalog Devices
      What it is
      Not recorded
      Maker
      Analog Devices
      Package
      Not recorded
      Pins
      8
      Source
      Published code list

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

    • AP8822N-50GIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, 200ms Rt delay, H-free
      Source
      Published code list

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

    • AP8822N-50GSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, 200ms Rt delay, H-free
      Source
      Published code list

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

    • AP8822N-50PIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, 200ms Rt delay
      Source
      Published code list

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

    • AP8822N-50PSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, 200ms Rt delay
      Source
      Published code list

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

    • EC95810N50C7IVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
      What it is
      Voltage supervisor
      Maker
      E-CMOS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, Td=200ms
      Source
      Published code list

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

    • EC95810N50C7SVoltage supervisor, E-CMOSVoltage supervisorNot recordedE-CMOS
      What it is
      Voltage supervisor
      Maker
      E-CMOS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.0V±2%, -Reset ODO, Td=200ms
      Source
      Published code list

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

    • IXD5127C55DNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
      What it is
      Voltage supervisor
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.5V±0.8%, -Reset PPO, -MR, 400ms Rt delay
      Source
      Published code list

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

    • IXD5127N55JNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
      What it is
      Voltage supervisor
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 5.5V±0.8%, +Reset ODO, -MR, 400ms Rt delay
      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.

Zener diode

Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.

Working, it reads

About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.

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, forward too: failed open.
  • Holds well off its rated voltage on the supply test: drifted.
  • A soft knee, or a voltage that creeps on the supply test: 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 meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.

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.

Printed with a code easy to misread as 80

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

Codes not listed here are printed on 8 more parts.

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