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SMD code T1J in MSOP-8

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 MSOP-8 is printed T1J

Not sure which one you have?

Answer up to 4 quick questions and these 2 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • ADM1032ARMZ-REELMSOP-8onsemiNot recordedonsemi
    What it is
    Not recorded
    Maker
    onsemi
    Package
    MSOP-8
    Pins
    8
    Details
    Remote and Local System Temperature Monitor
    Source
    Published code list

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

  • 1 more part has no package on record. Nothing rules it out, so it stays.
    • TCDT1JWRectifier, Taitron ComponentsRectifierTaitron Components
      What it is
      Rectifier
      Maker
      Taitron Components
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Sintered Glass Passivated Standard Rectifiers
      Source
      Manufacturer datasheet

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

      Datasheetfor TCDT1JW, opens in a new tab

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.

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.

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.

Codes that begin with T1J

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

Codes not listed here are printed on 22 more parts.

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