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SMD code 68 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.

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.

  • KDZ6.8VSOD-323Zener diode, 2 pins, KECZener diode2 pinsKEC
    What it is
    Zener diode
    Maker
    KEC
    Package
    SOD-323
    Pins
    2
    Source
    Manufacturer datasheet

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

  • MM3Z68VCW-P2-HFSOD-323Zener diode, 2 pins, ComchipZener diode2 pinsComchip
    What it is
    Zener diode
    Maker
    Comchip
    Package
    SOD-323
    Pins
    2
    Details
    68 V 200 mW zener diode
    Source
    Manufacturer datasheet

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

  • TZD6.8WSSOD-323Zener diode, 2 pins, Taitron ComponentsZener diode2 pinsTaitron Components
    What it is
    Zener diode
    Maker
    Taitron Components
    Package
    SOD-323
    Pins
    2
    Details
    SMD Zener Diodes (Two Terminals) - 200mW
    Source
    Manufacturer datasheet

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

  • HZU6.8GSOD-3232 pins, RenesasNot recorded2 pinsRenesas
    What it is
    Not recorded
    Maker
    Renesas
    Package
    SOD-323
    Pins
    2
    Details
    Z-diode: 6.4..7.14V, 200mW
    Source
    Published code list

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

  • MAZ8068SOD-3232 pins, PanNot recorded2 pinsPan
    What it is
    Not recorded
    Maker
    Pan
    Package
    SOD-323
    Pins
    2
    Details
    Z-diode: 6,4..7,2V, 150mW
    Source
    Published code list

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

  • MMPZ5266SPTSOD-323Zener diode, 2 pins, Chenmko EnterpriseZener diode2 pinsChenmko Enterprise
    What it is
    Zener diode
    Maker
    Chenmko Enterprise
    Package
    SOD-323
    Pins
    2
    Details
    Zener diode: 66.64..69.36V, Izt=1.8mA, Zzt=230, 225mW
    Source
    Published code list

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

  • 9 more parts have no package on record. Nothing rules them out, so they stay.
    • USFZ6.8VZener diode, KECZener diodeNot recordedKEC
      What it is
      Zener diode
      Maker
      KEC
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

    • 02DZ6.8XZener diode, ToshibaZener diodeNot recordedToshiba
      What it is
      Zener diode
      Maker
      Toshiba
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 6.40..6.80V, Iz=5mA, Zz=25, 200mW
      Source
      Published code list

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

    • 02DZ6.8YZener diode, ToshibaZener diodeNot recordedToshiba
      What it is
      Zener diode
      Maker
      Toshiba
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 6.60..7.02V, Iz=5mA, Zz=25, 200mW
      Source
      Published code list

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

    • 02DZ6.8ZZener diode, ToshibaZener diodeNot recordedToshiba
      What it is
      Zener diode
      Maker
      Toshiba
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 6.82..7.20V, Iz=5mA, Zz=25, 200mW
      Source
      Published code list

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

    • AP8822N-38GIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 3.8V±2%, -Reset ODO, 200ms Rt delay, H-free
      Source
      Published code list

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

    • AP8822N-38GSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 3.8V±2%, -Reset ODO, 200ms Rt delay, H-free
      Source
      Published code list

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

    • AP8822N-38PIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 3.8V±2%, -Reset ODO, 200ms Rt delay
      Source
      Published code list

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

    • AP8822N-38PSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
      What it is
      Voltage supervisor
      Maker
      Anwell Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 3.8V±2%, -Reset ODO, 200ms Rt delay
      Source
      Published code list

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

    • CDZ55C68Zener diode, Crownpo TechnologyZener diodeNot recordedCrownpo Technology
      What it is
      Zener diode
      Maker
      Crownpo Technology
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 64.60..71.40V, Zzt=200, Izt=2.25mA, 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.

Silicon diode

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

Working, it reads

About 0.5 to 0.8 V anode to cathode, and open the other way. Small switching diodes read about 0.6 to 0.7 V; large rectifiers can read a little lower.

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.
  • A reading the wrong way round as well: 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 three-pin body can hold two diodes. With a common pin they read two junctions from that pin, just like a transistor; in series they read two drops end to end. Test each pair the datasheet names.

A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.

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 68

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 27 more parts.

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