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SMD code 8V2 in SOD-323

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 SOD-323 is printed 8V2

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.

Zener diode. What differs:

  • MM3Z8V2CWSOD-3232 pins, Yangjie Electronic Tech2 pinsYangjie Electronic Tech
    What it is
    Zener diode
    Maker
    Yangjie Electronic Tech
    Package
    SOD-323
    Pins
    2
    Source
    Manufacturer datasheet

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

    Datasheetfor MM3Z8V2CW, opens in a new tab
  • 8 more parts have no package on record. Nothing rules them out, so they stay.
    • BZY55-C8V2Taiwan SemiconductorNot recordedTaiwan Semiconductor
      What it is
      Zener diode
      Maker
      Taiwan Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Izt=5mA, Zzt=7, 500mW
      Source
      Published code list

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

    • CDZ55C8V2Crownpo TechnologyNot recordedCrownpo Technology
      What it is
      Zener diode
      Maker
      Crownpo Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Zzt=7, Izt=5mA, 500mW
      Source
      Published code list

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

    • CDZ55C8V2SCrownpo TechnologyNot recordedCrownpo Technology
      What it is
      Zener diode
      Maker
      Crownpo Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Zzt=7, Izt=5mA, 500mW
      Source
      Published code list

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

    • CTZ55C8V2Compact TechnologyNot recordedCompact Technology
      What it is
      Zener diode
      Maker
      Compact Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Izt=5mA, Zzt=7, 500mW
      Source
      Published code list

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

    • CZRNC55C8V2-GComchipNot recordedComchip
      What it is
      Zener diode
      Maker
      Comchip
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Zt=7, Izt=5mA, 500mW
      Source
      Published code list

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

    • CZRSC55C8V2-GComchipNot recordedComchip
      What it is
      Zener diode
      Maker
      Comchip
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 7.79..8.61V, Zt=7, Izt=5mA, 500mW
      Source
      Published code list

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

    • LZ52C8V2WLite-On SemiconductorNot recordedLite-On Semiconductor
      What it is
      Zener diode
      Maker
      Lite-On Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 8.04..8.36V, Izt=5mA, Zzt=7, 500mW
      Source
      Published code list

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

    • LZ52C8V2WSLite-On SemiconductorNot recordedLite-On Semiconductor
      What it is
      Zener diode
      Maker
      Lite-On Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 8.04..8.36V, Izt=5mA, Zzt=7, 500mW
      Source
      Published code list

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

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.

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.

Printed with a code easy to misread as 8V2

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

Codes that begin with 8V2

For a marking with its end worn or burnt off. Each code has a page of its own.

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