SMD code BR in SOT-323
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.
14 parts in SOT-323 are printed BR
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.
2SC4081-RSOT-323NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- 50V, 0.15A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
F2SC4081RSOT-323NPN transistor, 3 pins, Formosa MicrosemiNPN transistor3 pinsFormosa Microsemi
- What it is
- NPN transistor
- Maker
- Formosa Microsemi
- Package
- SOT-323
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
F2SC4081R-Q1SOT-323NPN transistor, 3 pins, Formosa MicrosemiNPN transistor3 pinsFormosa Microsemi
- What it is
- NPN transistor
- Maker
- Formosa Microsemi
- Package
- SOT-323
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
L2SC4081RT1GSOT-323NPN transistor, 3 pins, LRCNPN transistor3 pinsLRC
- What it is
- NPN transistor
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, NPN, IC 150 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
S-L2SC4081RT1GSOT-323NPN transistor, 3 pins, LRCNPN transistor3 pinsLRC
- What it is
- NPN transistor
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, NPN, IC 150 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
T2SC4081-RSOT-323NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- 50V, 0.15A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SB1218A-RSOT-3233 pins, PanNot recorded3 pinsPan
- What it is
- Not recorded
- Maker
- Pan
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp: AF, 45V, 100mA, 150mW, B=210..340, >80MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SC4081RSOT-323NPN transistor, 3 pins, ROHMNPN transistor3 pinsROHM
- What it is
- NPN transistor
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- General Purpose Amplifier Transistor
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC4081UBRSOT-3233 pins, ROHMNot recorded3 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- equivalent 2SC1740SR
- Source
- Published code list
Is it dead? The meter test is below: This part.
MSB1218ASOT-3233 pins, onsemiNot recorded3 pinsonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Details
- gp pnp 45V
- Source
- Published code list
Is it dead? The meter test is below: This part.
MSB1218A-RSOT-3233 pins, MotorolaNot recorded3 pinsMotorola
- What it is
- Not recorded
- Maker
- Motorola
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp: GP, 45V, 100mA, 150mW, B=210..340
- Source
- Published code list
Is it dead? The meter test is below: This part.
MSB1218A-RT1SOT-3233 pins, onsemiNot recorded3 pinsonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
MSB1218A–RT1SOT-3233 pins, onsemiNot recorded3 pinsonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
SRA2212USOT-3233 pins, AukNot recorded3 pinsAuk
- What it is
- Not recorded
- Maker
- Auk
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp-Digi: Sw, 50V, 100mA, 200mW, 200MHz, R1=100k
- Source
- Published code list
Is it dead? The meter test is below: This part.
1 more part has no package on record. Nothing rules it out, so it stays.
BGA622RF amplifier (MMIC), InfineonRF amplifier (MMIC)Not recordedInfineon
- What it is
- RF amplifier (MMIC)
- Maker
- Infineon
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
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.
NPN transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Red probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
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.
RF amplifier
Voltage, board powered, on the output pin that the bias resistor or choke feeds.
Working, it reads
The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.
Dead, it reads
- Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
- Output pin at the full supply voltage: open inside, no current flowing.
- On the board:
- Measured on the board with power on; the bias network is part of the reading.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- The figures depend on the part and its bias resistor. The datasheet gives both.
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 BR
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 BR
For a marking with its end worn or burnt off. Each code has a page of its own.
- BR11
- 8RC2
- BRNB1
- BRNN1
- BRV01
- BRV61
- BRVM1
- BRP3
- BRL2
- BRQ200N031
- BRU1
- BRD1
- BRF1
- BRN1
- BRA1
- BR043
- .8R2P2
- 8RA1
- 8RB1
- 8RD1
- 8RE1
- 8RF1
- 8RH1
- 8RK1
- 8RL1
- 8RM1
- 8R01
- 8R11
Codes not listed here are printed on 8 more parts.
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