SMD code TG in SMA
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.
13 parts in SMA are printed TG
Not sure which one you have?
Answer up to 4 quick questions and these 30 parts are ranked, with a meter test that settles it. It works on a dead part too.
ASMAJ350A-HFSMATVS diode, 2 pins, ComchipTVS diode2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMA
- Pins
- 2
- Details
- 350 V 400 W unidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ6.0CASMATVS diode, 2 pins, JieJieTVS diode2 pinsJieJie
- What it is
- TVS diode
- Maker
- JieJie
- Package
- SMA
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ350ASMATVS diode, 2 pins, Good-ArkTVS diode2 pinsGood-Ark
- What it is
- TVS diode
- Maker
- Good-Ark
- Package
- SMA
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ350A-HFSMATVS diode, 2 pins, ComchipTVS diode2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMA
- Pins
- 2
- Details
- 350 V 400 W unidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ350A-SSMATVS diode, 2 pins, ProTek DevicesTVS diode2 pinsProTek Devices
- What it is
- TVS diode
- Maker
- ProTek Devices
- Package
- SMA
- Pins
- 2
- Details
- 400 Watt TVS Component
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ350A/TR13SMATVS diode, 2 pins, HXYTVS diode2 pinsHXY
- What it is
- TVS diode
- Maker
- HXY
- Package
- SMA
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
1SMA58AT3GSMATVS diode, 2 pins, onsemiTVS diode2 pinsonsemi
- What it is
- TVS diode
- Maker
- onsemi
- Package
- SMA
- Pins
- 2
- Details
- 58V Uni-Directional TVS Diode
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
CD214A-T6.0CASMATVS diode, 2 pins, BournsTVS diode2 pinsBourns
- What it is
- TVS diode
- Maker
- Bourns
- Package
- SMA
- Pins
- 2
- Details
- TVS: 6.0V, 38.8A, 400W(1ms), Bidirectional
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
EC76SMAJ350ASMATVS diode, 2 pins, E-CMOSTVS diode2 pinsE-CMOS
- What it is
- TVS diode
- Maker
- E-CMOS
- Package
- SMA
- Pins
- 2
- Details
- Transient voltage supressor: Vbr=391..432V, Vrwm=350V, Ipp=0.7A, 400W(1ms)
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
P4SMAJ6.0ACSMA2 pins, PanjitNot recorded2 pinsPanjit
- What it is
- Not recorded
- Maker
- Panjit
- Package
- SMA
- Pins
- 2
- Details
- TVS: 6V, 38.8A, 400W (1ms), Bidirectional
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
P4SMAJ6.0CASMA2 pins, PanjitNot recorded2 pinsPanjit
- What it is
- Not recorded
- Maker
- Panjit
- Package
- SMA
- Pins
- 2
- Details
- TVS: 6.0V, 38.8A, 400W(1ms), Bidirectional
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
P4SMAJ350ASMA2 pins, Micro Commercial ComponentsNot recorded2 pinsMicro Commercial Components
- What it is
- Not recorded
- Maker
- Micro Commercial Components
- Package
- SMA
- Pins
- 2
- Details
- TVS: 350V, 0.7A, 400W(1ms)
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
SMAJ6.0CAGSMATVS diode, 2 pins, First SemiconductorTVS diode2 pinsFirst Semiconductor
- What it is
- TVS diode
- Maker
- First Semiconductor
- Package
- SMA
- Pins
- 2
- Details
- Transient voltage supressor: Vrwm=6.0V, Vbr=6.67..7.67V, Ipp=38.8A, 400W(1ms), Bidir.
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
2 more parts have no package on record. Nothing rules them out, so they stay.
NCP105AMX300LDO regulator, onsemiLDO regulatorNot recordedonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- LDO Regulator - High PSRR
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
NCV8177AMTW085LDO 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.
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.
Printed with a code easy to misread as TG
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 13 more parts.
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