SMD code VR in SOT-23
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-23 is printed VR
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.
CAT809VTBI-GT3SOT-23Voltage supervisor, onsemiVoltage supervisoronsemi
- What it is
- Voltage supervisor
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 1.60V±1.5%, -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
14 more parts have no package on record. Nothing rules them out, so they stay.
FSA636UCXLogic gate, onsemiLogic gateonsemi
- What it is
- Logic gate
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Ultra Small, Low Power, 4 Data Lane, 2:1 Switch for MIPI, SuperSpeed USB, PCIe and DisplayPort Product Preview
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SM4F40CA-ATTVS diode, WayonTVS diodeWayon
- What it is
- TVS diode
- Maker
- Wayon
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAFJ170CATVS diode, Blue RocketTVS diodeBlue Rocket
- What it is
- TVS diode
- Maker
- Blue Rocket
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAHFL170CATVS diode, Formosa MicrosemiTVS diodeFormosa 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.
SMF40CA-ATTVS diode, WayonTVS diodeWayon
- What it is
- TVS diode
- Maker
- Wayon
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMF170CA-MFLTVS diode, Formosa MicrosemiTVS diodeFormosa 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.
74AVCH1T45FWDiodes IncorporatedNot recordedDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Dual supply translating transceiver with 3-state output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74LVC1G06GFNXPNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74LVC1G06GMNXPNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74LVC1G06GNNXPNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74LVC1G06GSNXPNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74LVC1G06GXNXPNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
BD46335GVoltage supervisor, ROHMVoltage supervisorROHM
- What it is
- Voltage supervisor
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS-IC: Voltage Detector 3,3V, -Reset Push-pull output, 500ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
C74VHC1G50DTLogic gate, onsemiLogic gateonsemi
- What it is
- Logic gate
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Single Buffer
- 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.
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.
Printed with a code easy to misread as VR
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 VR
For a marking with its end worn or burnt off. Each code has a page of its own.
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