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SMD code 6YK

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.

14 parts are printed 6YK

Not sure which one you have?

Answer up to 4 quick questions and these 14 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • SMA6J30CASMATVS diode, 2 pins, YFWTVS diodeSMA2 pinsYFW
    What it is
    TVS diode
    Maker
    YFW
    Package
    SMA
    Pins
    2
    Source
    Manufacturer datasheet

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

    Datasheetfor SMA6J30CA, opens in a new tab
  • SMAF6J30CASMAFTVS diode, 2 pins, YFWTVS diodeSMAF2 pinsYFW
    What it is
    TVS diode
    Maker
    YFW
    Package
    SMAF
    Pins
    2
    Source
    Manufacturer datasheet

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

    Datasheetfor SMAF6J30CA, opens in a new tab
  • ELM98060ACSOT-893 pins, ELM TechnologyNot recordedSOT-893 pinsELM Technology
    What it is
    Not recorded
    Maker
    ELM Technology
    Package
    SOT-89
    Pins
    3
    Details
    Linear voltage regulator IC: 6.0V±2%, 200mA
    Source
    Published code list

    Is it dead? The meter test is below: Voltage regulator.

  • IXD3237E3KDER-GUSP-6CDC-DC converter, 6 pins, IXYSDC-DC converterUSP-6C6 pinsIXYS
    What it is
    DC-DC converter
    Maker
    IXYS
    Package
    USP-6C
    Pins
    6
    Details
    DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
    Source
    Published code list

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

  • IXD3237E3KDMR-GSOT-23-5DC-DC converter, 5 pins, IXYSDC-DC converterSOT-23-55 pinsIXYS
    What it is
    DC-DC converter
    Maker
    IXYS
    Package
    SOT-23-5
    Pins
    5
    Details
    DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
    Source
    Published code list

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

  • IXD5127N51HMRSOT-23-5Voltage supervisor, 5 pins, IXYSVoltage supervisorSOT-23-55 pinsIXYS
    What it is
    Voltage supervisor
    Maker
    IXYS
    Package
    SOT-23-5
    Pins
    5
    Details
    Voltage detector IC: 5.1V±0.8%, +Reset ODO, -MR, Rdt=200ms
    Source
    Published code list

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

  • XC6127N51HMRSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
    What it is
    Voltage supervisor
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    Voltage detector IC: 5.1V±0.8%, +Reset ODO, -MR, Rdt=200ms
    Source
    Published code list

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

  • XC9237E3KDER-GUSP-6CDC-DC converter, 6 pins, TorexDC-DC converterUSP-6C6 pinsTorex
    What it is
    DC-DC converter
    Maker
    Torex
    Package
    USP-6C
    Pins
    6
    Details
    DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
    Source
    Published code list

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

  • XC9237E3KDMR-GSOT-23-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-23-55 pinsTorex
    What it is
    DC-DC converter
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
    Source
    Published code list

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

  • 5 more parts have no package on record
    • SMA6SF30CATVS diode, Formosa MicrosemiTVS diodeNot recordedNot recordedFormosa Microsemi
      What it is
      TVS diode
      Maker
      Formosa Microsemi
      Package
      Not recorded
      Pins
      Not recorded
      Source
      Manufacturer datasheet

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

      Datasheetfor SMA6SF30CA, opens in a new tab
    • IXD3237E3KD0R-GDC-DC converter, IXYSDC-DC converterNot recordedNot recordedIXYS
      What it is
      DC-DC converter
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
      Source
      Published code list

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

    • IXD3237E3KD4R-GDC-DC converter, IXYSDC-DC converterNot recordedNot recordedIXYS
      What it is
      DC-DC converter
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
      Source
      Published code list

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

    • XC9237E3KD0R-GDC-DC converter, TorexDC-DC converterNot recordedNot recordedTorex
      What it is
      DC-DC converter
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
      Source
      Published code list

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

    • XC9237E3KD4R-GDC-DC converter, TorexDC-DC converterNot recordedNot recordedTorex
      What it is
      DC-DC converter
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      DC/DC voltage converter IC: PWM-PWM/PFM, st-dwn, 3.75V±2%, 600mA, 3MHz, Vin>1.8V, LSST, CL
      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.

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.

Voltage regulator

Voltage, board powered, black probe on ground. Then ohms with the power off.

Working, it reads

Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.

Dead, it reads

  • Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
  • Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
  • Power off, input to output near 0 Ω: shorted.
On the board:
An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
Compare:
The same regulator on another rail or another board shows the right voltages and the right resistances.
Watch for:
Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.

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 6YK

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 6YK

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

Did you find your part?

Open this in the search to correct a character or try another package.