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SMD code VA in SOT-416

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 29 parts are ranked, with a meter test that settles it. It works on a dead part too.

  • 2SC4626-ASOT-4163 pins, PanNot recorded3 pinsPan
    What it is
    Not recorded
    Maker
    Pan
    Package
    SOT-416
    Pins
    3
    Details
    Si-npn: HF, 30V, 30mA, 125mW, 250MHz, B=60..120
    Source
    Published code list

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

  • 14 more parts have no package on record. Nothing rules them out, so they stay.
    • BF1217WRN-channel MOSFET, 4 pins, NXPN-channel MOSFET4 pinsNXP
      What it is
      N-channel MOSFET
      Maker
      NXP
      Package
      Not recorded
      Pins
      4
      Details
      N-channel dual gate MOSFET
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: N-channel MOSFET.

    • NCP4586DMU12LDO regulator, onsemiLDO regulatorNot recordedonsemi
      What it is
      LDO regulator
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Voltage Regulator - Low Noise, Low Dropout
      Source
      Manufacturer datasheet

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

    • NCV8177AMX075LDO regulator, onsemiLDO regulatorNot recordedonsemi
      What it is
      LDO regulator
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear Voltage Regulator, Fast Transient Response, 500 mA with Enable
      Source
      Manufacturer datasheet

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

    • NCV8177AMX075TCG-A642LDO regulator, onsemiLDO regulatorNot recordedonsemi
      What it is
      LDO regulator
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear Voltage Regulator, Fast Transient Response, 500 mA with Enable
      Source
      Manufacturer datasheet

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

    • NCV8705MT18LDO regulator, onsemiLDO regulatorNot recordedonsemi
      What it is
      LDO regulator
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      LDO Regulator - Ultra-Low Quiescent Current, I 13  A, Ultra-Low Noise
      Source
      Manufacturer datasheet

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

    • NCV8715MX12LDO regulator, onsemiLDO regulatorNot recordedonsemi
      What it is
      LDO regulator
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear Voltage Regulator - Low Dropout, Ultra-Low Iq, Wide Input Voltage
      Source
      Manufacturer datasheet

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

    • NSS40500UW3PNP transistor, onsemiPNP transistorNot recordedonsemi
      What it is
      PNP transistor
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      40 V, 5.0 A, Low V PNP Transistor
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: PNP transistor.

    • NSS40600CF8PNP transistor, onsemiPNP transistorNot recordedonsemi
      What it is
      PNP transistor
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      40 V, 7.0 A, Low V PNP Transistor
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: PNP transistor.

    • SNSS40600CF8PNP transistor, onsemiPNP transistorNot recordedonsemi
      What it is
      PNP transistor
      Maker
      onsemi
      Package
      Not recorded
      Pins
      Not recorded
      Details
      40 V, 7.0 A, Low V PNP Transistor
      Source
      Manufacturer datasheet

      Is it dead? The meter test is below: PNP transistor.

    • 1SV298HPIN diode, Sanyo ElectricPIN diodeNot recordedSanyo Electric
      What it is
      PIN diode
      Maker
      Sanyo Electric
      Package
      Not recorded
      Pins
      Not recorded
      Details
      PIN diode: Triple, VHF/UHF Atten., 50V, 50mA, 0.23pF, 7(100MHz)
      Source
      Published code list

      Is it dead? The meter test is below: PIN diode or varicap.

    • 74LVC1G00GMLogic gate, NXPLogic gateNot recordedNXP
      What it is
      Logic gate
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Single 2-Input NAND gate
      Source
      Published code list

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

    • 74LVC1G00GNNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: 2-input NAND gate
      Source
      Published code list

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

    • 74LVC1G00GSNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: 2-input NAND gate
      Source
      Published code list

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

    • 74LVC1G00GXNXPNot recordedNot recordedNXP
      What it is
      Not recorded
      Maker
      NXP
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS logic IC: 2-input NAND gate
      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.

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.

N-channel MOSFET

Diode range, part lifted. Test drain to source first, then short gate to source and test again.

Working, it reads

Red probe on the source, black on the drain: about 0.4 to 0.9 V, the body diode. Open the other way. The gate reads open to both other pins, both ways.

Dead, it reads

  • Drain to source the same both ways, near 0 V with a continuous beep, and still so after shorting gate to source: shorted. The classic failure.
  • The gate reads low to source or drain: gate shorted. Often all three pins end up shorted together.
  • No body diode at all: failed open.
On the board
the gate usually has a resistor to the source, so gate to source reads that resistor, which is not a fault. A drain short can be the load. Lift a leg to be sure.
Compare:
If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
Watch for:
The diode range can charge the gate enough to turn the part on, and then drain to source reads near 0 both ways on a good part. Short gate to source and test again before you condemn it.

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.

PNP transistor

Diode range, part lifted or its base leg off the pad.

Working, it reads

Black probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.

Dead, it reads

  • Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
  • The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
  • Only one junction reads, or none: a junction has failed open. It then looks like a diode.
  • A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.

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

PIN diode or varicap

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

Working, it reads

About 0.6 to 0.9 V anode to cathode, 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.
  • 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 varicap that has drifted in capacitance reads normal on a meter. Only a capacitance meter or the tuning itself shows it.

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.

Codes that begin with VA

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 38 more parts.

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