SMD code GV-
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.
38 parts are printed GV-
Not sure which one you have?
Answer up to 4 quick questions and these 38 parts are ranked, with a meter test that settles it. It works on a dead part too.
6.0SMAJ75CASMATVS diode, 2 pins, Galaxy MicroelectronicsTVS diodeSMA2 pinsGalaxy Microelectronics
- What it is
- TVS diode
- Maker
- Galaxy Microelectronics
- Package
- SMA
- Pins
- 2
- Details
- 75V, 600W, Surface Mount TVS
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
BZT52H-A68SOD-123FZener diode, 2 pins, NexperiaZener diodeSOD-123F2 pinsNexperia
- What it is
- Zener diode
- Maker
- Nexperia
- Package
- SOD-123F
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
LP5907SNX-2.9X2SONLDO regulator, 4 pins, Texas InstrumentsLDO regulatorX2SON4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- X2SON
- Pins
- 4
- Details
- 250mA, Low-Noise, Low-IQ LDO
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
LP5907SNX2X2SONLDO regulator, 4 pins, Texas InstrumentsLDO regulatorX2SON4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- X2SON
- Pins
- 4
- Details
- 250mA, Low-Noise, Low-IQ LDO
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
LP5907SNX2.9NOPBG4X2SONLDO regulator, 4 pins, Texas InstrumentsLDO regulatorX2SON4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- X2SON
- Pins
- 4
- Details
- 250mA, Low-Noise, Low-IQ LDO
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
PP1800SBSMBTVS thyristor, 2 pins, ProTek DevicesTVS thyristorSMB2 pinsProTek Devices
- What it is
- TVS thyristor
- Maker
- ProTek Devices
- Package
- SMB
- Pins
- 2
- Details
- Thyristor Surge Suppressor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
1SV251SOT-233 pins, Sanyo ElectricNot recordedSOT-233 pinsSanyo Electric
- What it is
- Not recorded
- Maker
- Sanyo Electric
- Package
- SOT-23
- Pins
- 3
- Details
- PIN-diode: Dual, VHF/UHF, 50V, 50mAA, 0,23pF, 3,5Ω(100MHz)
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
3T180BSMB2 pins, MDE SemiconductorNot recordedSMB2 pinsMDE Semiconductor
- What it is
- Not recorded
- Maker
- MDE Semiconductor
- Package
- SMB
- Pins
- 2
- Details
- Thy-SPD: Vdrm=160V, Vs=220V, Ipp=100A, 40pF
- Source
- Published code list
Is it dead? The meter test is below: This part.
AAT3221IGV-3.1SOT-23-5LDO regulator, 5 pins, SkyworksLDO regulatorSOT-23-55 pinsSkyworks
- What it is
- LDO regulator
- Maker
- Skyworks
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 3.1V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
AP130-22RSOT-233 pins, AnachipNot recordedSOT-233 pinsAnachip
- What it is
- Not recorded
- Maker
- Anachip
- Package
- SOT-23
- Pins
- 3
- Details
- VR-IC: LDO, 2,2V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
5 more parts have no package on record
NCP718BMT300LDO regulator, onsemiLDO regulatorNot recordedNot recordedonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage Regulator - Low Dropout, Wide Input Voltage, Low Iq
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
NCV8718BMT300LDO regulator, onsemiLDO regulatorNot recordedNot recordedonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage Regulator - Low Dropout, Low Iq, Wide Input
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TVD12WUESD protection diode, Taitron ComponentsESD protection diodeNot recordedNot recordedTaitron Components
- What it is
- ESD protection diode
- Maker
- Taitron Components
- Package
- Not recorded
- Pins
- Not recorded
- Details
- SMD TVS Arrays (Two Terminals)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
1SV249Sanyo ElectricNot recordedNot recordedNot recordedSanyo Electric
- What it is
- Not recorded
- Maker
- Sanyo Electric
- Package
- Not recorded
- Pins
- Not recorded
- Details
- PIN-diode: Dual, VHF/UHF, 50V, 50mA, 0,23pF, 3,5Ω(100MHz)
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
AAT3221IJS-3.1LDO regulator, SkyworksLDO regulatorNot recordedNot recordedSkyworks
- What it is
- LDO regulator
- Maker
- Skyworks
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 3.1V±2%, 150mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
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.
Zener diode
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
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, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: 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 meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
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.
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.
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.
Printed with a code easy to misread as GV-
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes not listed here are printed on 31 more parts.
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