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WhatSMDSign in

SMD code HV in SOT-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 SOT-323 is printed HV

Not sure which one you have?

Answer up to 4 quick questions and these 23 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • DDZX9702WSOT-3233 pins, Diodes IncorporatedNot recorded3 pinsDiodes Incorporated
    What it is
    Not recorded
    Maker
    Diodes Incorporated
    Package
    SOT-323
    Pins
    3
    Details
    Z-diode: 15V±5%, 200mW
    Source
    Published code list

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

  • 14 more parts have no package on record. Nothing rules them out, so they stay.
    • 74HC2G17GVNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: Dual buffer with Schmitt-trigger input
      Source
      Published code list

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

    • BU4828FVoltage supervisor, ROHMVoltage supervisorNot recordedROHM
      What it is
      Voltage supervisor
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 2,8V, -Reset Open drain output
      Source
      Published code list

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

    • BU4828FWEVoltage supervisor, ROHMVoltage supervisorNot recordedROHM
      What it is
      Voltage supervisor
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 2,8V, -Reset Open drain output
      Source
      Published code list

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

    • BU4828GVoltage supervisor, ROHMVoltage supervisorNot recordedROHM
      What it is
      Voltage supervisor
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 2,8V, -Reset Open drain output
      Source
      Published code list

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

    • IXD5127C48BNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
      What it is
      Voltage supervisor
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, -Reset PPO, -MR, 100ms Rt delay
      Source
      Published code list

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

    • IXD5127N48GNRVoltage supervisor, IXYSVoltage supervisorNot recordedIXYS
      What it is
      Voltage supervisor
      Maker
      IXYS
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, +Reset ODO, -MR, 100ms Rt delay
      Source
      Published code list

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

    • LT4ME9.0ATVS diode, Lite-On SemiconductorTVS diodeNot recordedLite-On Semiconductor
      What it is
      TVS diode
      Maker
      Lite-On Semiconductor
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Transient voltage supressor: Vrwm=9.0V, Vbr=10.0..11.1V, Ipp=26.0A, 400W(1ms)
      Source
      Published code list

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

    • P2SMSJ9.0ATVS diode, YeashinTVS diodeNot recordedYeashin
      What it is
      TVS diode
      Maker
      Yeashin
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Transient voltage supressor: Vrwm=9.0V, Vbr=10..11.1V, Ipp=13A, 200W(1ms)
      Source
      Published code list

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

    • RP300K46ACVoltage supervisor, RicohVoltage supervisorNot recordedRicoh
      What it is
      Voltage supervisor
      Maker
      Ricoh
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.6V±1%, +Reset PPO, -MR, Rdt=50ms
      Source
      Published code list

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

    • SMF4L9.0AQTVS diode, Diodes IncorporatedTVS diodeNot recordedDiodes Incorporated
      What it is
      TVS diode
      Maker
      Diodes Incorporated
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Transient voltage supressor: Vrwm=9V, Vbr=10..11.1V, Ipp=26A, 400W(1ms)
      Source
      Published code list

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

    • XC6127C48BNRVoltage supervisor, TorexVoltage supervisorNot recordedTorex
      What it is
      Voltage supervisor
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, -Reset PPO, -MR, Rdt=100ms
      Source
      Published code list

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

    • XC6127N48GNRVoltage supervisor, TorexVoltage supervisorNot recordedTorex
      What it is
      Voltage supervisor
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, +Reset ODO, -MR, Rdt=100ms
      Source
      Published code list

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

    • XC6129C48D9R-GVoltage supervisor, TorexVoltage supervisorNot recordedTorex
      What it is
      Voltage supervisor
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, -Reset PPO, Det. Delay, Undef. Protect
      Source
      Published code list

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

    • XC6129C48DNR-GVoltage supervisor, TorexVoltage supervisorNot recordedTorex
      What it is
      Voltage supervisor
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage detector IC: 4.8V±0.8%, -Reset PPO, Det. Delay, Undef. Protect
      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.

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.

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.

Codes that begin with HV

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

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