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SMD code S510 in SMA

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.

5 parts in SMA are printed S510

Not sure which one you have?

Answer up to 4 quick questions and these 13 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • SM5100ASMASchottky diode, LRCSchottky diodeLRC
    What it is
    Schottky diode
    Maker
    LRC
    Package
    SMA
    Pins
    2
    Details
    Schottky diode, VR 100 V, IF 5 A, VF Max 0.85 V
    Source
    Manufacturer datasheet

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

  • SMAJ8.5ASMATVS diode, EIC SemiconductorTVS diodeEIC Semiconductor
    What it is
    TVS diode
    Maker
    EIC Semiconductor
    Package
    SMA
    Pins
    2
    Source
    Published code list

    Is it dead? The meter test is below: TVS or ESD protection diode.

  • SMAJ8.5CASMATVS diode, EIC SemiconductorTVS diodeEIC Semiconductor
    What it is
    TVS diode
    Maker
    EIC Semiconductor
    Package
    SMA
    Pins
    2
    Source
    Published code list

    Is it dead? The meter test is below: TVS or ESD protection diode.

  • STBS510SMATVS diode, EIC SemiconductorTVS diodeEIC Semiconductor
    What it is
    TVS diode
    Maker
    EIC Semiconductor
    Package
    SMA
    Pins
    2
    Details
    TVS: 9.44..10.4V, 34.7A, 500W(1ms), Bidirectional
    Source
    Published code list

    Is it dead? The meter test is below: TVS or ESD protection diode.

  • STUS510SMATVS diode, EIC SemiconductorTVS diodeEIC Semiconductor
    What it is
    TVS diode
    Maker
    EIC Semiconductor
    Package
    SMA
    Pins
    2
    Details
    TVS: 9.44..10.4V, 34.7A, 500W(1ms)
    Source
    Published code list

    Is it dead? The meter test is below: TVS or ESD protection diode.

  • 8 more parts have no package on record. Nothing rules them out, so they stay.
    • FM5100-AHSTSchottky diode, Formosa MicrosemiSchottky diodeFormosa Microsemi
      What it is
      Schottky diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

    • FM5100-ASFSchottky diode, Formosa MicrosemiSchottky diodeFormosa Microsemi
      What it is
      Schottky diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

    • FM5100-BSSchottky diode, Formosa MicrosemiSchottky diodeFormosa Microsemi
      What it is
      Schottky diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

    • FM5100-BS-Q1Schottky diode, Formosa MicrosemiSchottky diodeFormosa Microsemi
      What it is
      Schottky diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

    • S-CSM5100ASchottky diode, LRCSchottky diodeLRC
      What it is
      Schottky diode
      Maker
      LRC
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Schottky diode, VR 100 V, IF 5 A, VF Max 0.85 V
      Source
      Manufacturer datasheet

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

    • TSCDB510Schottky diode, Taitron ComponentsSchottky diodeTaitron Components
      What it is
      Schottky diode
      Maker
      Taitron Components
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Low Profile Chip Type Schottky Rectifier
      Source
      Manufacturer datasheet

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

    • TSCDC510Schottky diode, Taitron ComponentsSchottky diodeTaitron Components
      What it is
      Schottky diode
      Maker
      Taitron Components
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Low Profile Chip Type Schottky Rectifier
      Source
      Manufacturer datasheet

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

    • SS5P10Schottky diode, VishaySchottky diodeVishay
      What it is
      Schottky diode
      Maker
      Vishay
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Diode: SBR, 100V, 5A, Vf<0.88V(5A)
      Source
      Published code list

      Is it dead? The meter test is below: Schottky 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.

Schottky diode

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

Working, it reads

About 0.15 to 0.45 V anode to cathode, roughly half a silicon diode, and open the other way.

Dead, it reads

  • The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
  • A reading the wrong way round as well: leaky.
  • Open both ways: failed open.
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 large Schottky can read about 0.1 V forward and beep like a short, and leaks a little the wrong way when good, more when warm. It is shorted only if it reads the same both ways. Measure it cold, beside an identical cold one.

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

TVS or ESD protection diode

Diode range, from the protected line to ground, part lifted if you can.

Working, it reads

A one-way part reads about 0.6 to 0.8 V forward and open in reverse. A two-way part reads open both ways. Arrays with several lines read as the datasheet's diagram draws them.

Dead, it reads

  • From the line to ground, the same reading both ways, near 0 V with a continuous beep: shorted.
  • A reading both ways on a one-way part: leaky.
  • A one-way part open both ways: failed open.
On the board
, a line reading shorted to ground can be this part or anything else on that line. Lift it: if the short goes with it, it has failed.
Compare:
The same part on the next line or connector pin is the healthy reading to compare with.
Watch for:
A two-way part reads open both ways when it is good, exactly like one that has failed open. The meter cannot tell them apart; an identical part on the next line can.

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 S510

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 S510

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

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