SMD code Bjk
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.
15 parts are printed Bjk
Not sure which one you have?
Answer up to 4 quick questions and these 15 parts are ranked, with a meter test that settles it. It works on a dead part too.
824541402SMCTVS diode, 2 pins, Würth ElektronikTVS diodeSMC2 pinsWürth Elektronik
- What it is
- TVS diode
- Maker
- Würth Elektronik
- Package
- SMC
- Pins
- 2
- Details
- WE-TVSP Power TVS Diode SMCJ400CA
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
ASMCJ400CA-HFSMCTVS diode, 2 pins, ComchipTVS diodeSMC2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMC
- Pins
- 2
- Details
- 400 V 1500 W bidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
ATV15C401JB-HFSMCTVS diode, 2 pins, ComchipTVS diodeSMC2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMC
- Pins
- 2
- Details
- 400 V 1500 W bidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
PAM31DOAB400CASMCTVS diode, 2 pins, ProTek DevicesTVS diodeSMC2 pinsProTek Devices
- What it is
- TVS diode
- Maker
- ProTek Devices
- Package
- SMC
- Pins
- 2
- Details
- 1500 Watt TVS Component
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMCJ300CASMCTVS diode, 2 pins, JieJieTVS diodeSMC2 pinsJieJie
- What it is
- TVS diode
- Maker
- JieJie
- Package
- SMC
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMCJ300CA-AUSMCTVS diode, 2 pins, JieJieTVS diodeSMC2 pinsJieJie
- What it is
- TVS diode
- Maker
- JieJie
- Package
- SMC
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMCJ400CASMCTVS diode, 2 pins, SOCAYTVS diodeSMC2 pinsSOCAY
- What it is
- TVS diode
- Maker
- SOCAY
- Package
- SMC
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SMCJ400CA-HFSMCTVS diode, 2 pins, ComchipTVS diodeSMC2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMC
- Pins
- 2
- Details
- 400 V 1500 W bidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
TV15C401JB-HFSMCTVS diode, 2 pins, ComchipTVS diodeSMC2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMC
- Pins
- 2
- Details
- 400 V 1500 W bidirectional TVS diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
EC76SMCJ400CASMCTVS diode, 2 pins, E-CMOSTVS diodeSMC2 pinsE-CMOS
- What it is
- TVS diode
- Maker
- E-CMOS
- Package
- SMC
- Pins
- 2
- Details
- Transient voltage supressor: Vrwm=400V, Vbr=447..494V, 2.3A, 1500W(1ms), Bidir.
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
INA195AISOT-23-55 pins, Texas InstrumentsNot recordedSOT-23-55 pinsTexas Instruments
- What it is
- Not recorded
- Maker
- Texas Instruments
- Package
- SOT-23-5
- Pins
- 5
- Details
- Current sensor
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
S-8520E25MC-BJKT2SOT-23-55 pins, ABLICNot recordedSOT-23-55 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-23-5
- Pins
- 5
- Source
- Published code list
Is it dead? The meter test is below: This part.
TC1302BJKVMFDFNLDO regulator, MicrochipLDO regulatorDFNNot recordedMicrochip
- What it is
- LDO regulator
- Maker
- Microchip
- Package
- DFN
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, Dual out, Vo1/Vo2=2.4V(300mA)/2.3V(150mA)±2.5%, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
TV15C401JB-GSMCTVS diode, 2 pins, ComchipTVS diodeSMC2 pinsComchip
- What it is
- TVS diode
- Maker
- Comchip
- Package
- SMC
- Pins
- 2
- Details
- Transient voltage supressor: Vrwm=400.0V, Vbr=447.0..494.0V, Ipp=2.30A, 1500W(1ms), Bidir.
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
1 more part has no package on record
NA198AIDBVTexas InstrumentsNot recordedNot recordedNot recordedTexas Instruments
- What it is
- Not recorded
- Maker
- Texas Instruments
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Current sensor
- 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.
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.
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.
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.
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.
Codes that begin with Bjk
For a marking with its end worn or burnt off. Each code has a page of its own.
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