SMD code BC-
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.
135 parts are printed BC-
Not sure which one you have?
Answer up to 4 quick questions and these 50 parts are ranked, with a meter test that settles it. It works on a dead part too.
ELM99321BSOT-89LDO regulator, 3 pins, ELM TechnologyLDO regulatorSOT-893 pinsELM Technology
- What it is
- LDO regulator
- Maker
- ELM Technology
- Package
- SOT-89
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 3.2V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EP1201W18SOT-23LDO regulator, 3 pins, EorexLDO regulatorSOT-233 pinsEorex
- What it is
- LDO regulator
- Maker
- Eorex
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 1.8V±2%, 250mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
FSS215SMBSchottky diode, 2 pins, Fagor ElectronicaSchottky diodeSMB2 pinsFagor Electronica
- What it is
- Schottky diode
- Maker
- Fagor Electronica
- Package
- SMB
- Pins
- 2
- Details
- Diode: SBR, 150V, 2A, Vf<0.8V(2A)
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
GS6333UR23D1SOT-23Voltage supervisor, 3 pins, VishayVoltage supervisorSOT-233 pinsVishay
- What it is
- Voltage supervisor
- Maker
- Vishay
- Package
- SOT-23
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 2,3V, -Reset Push-pull output, 1,5ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
KTC9013SSOT-233 pins, KECNot recordedSOT-233 pinsKEC
- What it is
- Not recorded
- Maker
- KEC
- Package
- SOT-23
- Pins
- 3
- Details
- npn 30V 0.5A comp KTC9012S
- Source
- Published code list
Is it dead? The meter test is below: This part.
LD39020ATPU28RDFN4 pins, STMicroelectronicsNot recordedDFN4 pinsSTMicroelectronics
- What it is
- Not recorded
- Maker
- STMicroelectronics
- Package
- DFN
- Pins
- 4
- Details
- equivalent [2.8V LDO]
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LT1620CMS8MSOP-88 pins, Analog DevicesNot recordedMSOP-88 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- MSOP-8
- Pins
- 8
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX821SUSSOT-1434 pins, Analog DevicesNot recordedSOT-1434 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-143
- Pins
- 4
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX821SUS-TSOT-143Voltage supervisor, 4 pins, Maxim Integrated ProductsVoltage supervisorSOT-1434 pinsMaxim Integrated Products
- What it is
- Voltage supervisor
- Maker
- Maxim Integrated Products
- Package
- SOT-143
- Pins
- 4
- Details
- Voltage detector IC: 2.93V±1.5%, -Reset PPO, Select Rt
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MMSZ4678SOD-123Zener diode, 2 pins, EIC SemiconductorZener diodeSOD-1232 pinsEIC Semiconductor
- What it is
- Zener diode
- Maker
- EIC Semiconductor
- Package
- SOD-123
- Pins
- 2
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
PI74STX1G14CXSOT-3535 pins, Pericom SemiconductorNot recordedSOT-3535 pinsPericom Semiconductor
- What it is
- Not recorded
- Maker
- Pericom Semiconductor
- Package
- SOT-353
- Pins
- 5
- Details
- CMOS logic IC: Inverter with Schmitt-trigger input
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
4 more parts have no package on record
IXD5127C19GNRVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 1.9V±0.8%,+Reset PPO, -MR, 100ms Rt delay
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD5127N20BNRVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 2.0V±0.8%, -Reset ODO, -MR, 100ms Rt delay
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
NC7WV07LFairchild SemiconductorNot recordedNot recordedNot recordedFairchild Semiconductor
- What it is
- Not recorded
- Maker
- Fairchild Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Dual noninverting buffer/driver (ODO)
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
PAM8303DAZNPower Analog MicroelectronicsNot recordedNot recordedNot recordedPower Analog Microelectronics
- What it is
- Not recorded
- Maker
- Power Analog Microelectronics
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear IC: APA, BTL, class-D, 2.7..5.5V, 3W(5V/4), shutdown
- 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.
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.
Schottky diode
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.15 to 0.45 V anode to cathode, roughly half a silicon diode, 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.
- A reading the wrong way round as well: leaky.
- 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 large Schottky can read about 0.1 V forward and beep like a short, and leaks a little the wrong way when good, more when warm. It is shorted only if it reads the same both ways. Measure it cold, beside an identical cold one.
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.
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.
Did you find your part?
Open this in the search to correct a character or try another package.