SMD code R2S
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.
9 parts are printed R2S
Not sure which one you have?
Answer up to 4 quick questions and these 9 parts are ranked, with a meter test that settles it. It works on a dead part too.
ADR5043AKSZ-R2SOT-3233 pins, Analog DevicesNot recordedSOT-3233 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-323
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
ADR5043ARTZ-R2SOT-233 pins, Analog DevicesNot recordedSOT-233 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-23
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
BFP620SOT-343RF transistor, 4 pins, InfineonRF transistorSOT-3434 pinsInfineon
- What it is
- RF transistor
- Maker
- Infineon
- Package
- SOT-343
- Pins
- 4
- Source
- Published code list
Is it dead? The meter test is below: Bipolar transistor.
BFR93ASOT-23NPN transistor, 3 pins, InfineonNPN transistorSOT-233 pinsInfineon
- What it is
- NPN transistor
- Maker
- Infineon
- Package
- SOT-23
- Pins
- 3
- Details
- NPN bipolar transistor
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
BFR93ATSOT-4163 pins, InfineonNot recordedSOT-4163 pinsInfineon
- What it is
- Not recorded
- Maker
- Infineon
- Package
- SOT-416
- Pins
- 3
- Details
- Si-npn: UHF-A-Band, 15V, 30mA, 300mW, B>40, >5GHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
BFR93AWSOT-3233 pins, InfineonNot recordedSOT-3233 pinsInfineon
- What it is
- Not recorded
- Maker
- Infineon
- Package
- SOT-323
- Pins
- 3
- Details
- Si-npn: UHF-A-Band, 15V, 30mA, 300mW, B>40, >5GHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
BFR93WSOT-3233 pins, InfineonNot recordedSOT-3233 pinsInfineon
- What it is
- Not recorded
- Maker
- Infineon
- Package
- SOT-323
- Pins
- 3
- Details
- Si-npn: UHF-A-Band, 15V, 30mA, 300mW, B>40, >5GHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
S-8211DAS-M5T1SOT-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.
1 more part has no package on record
BFP620FRF transistor, 4 pins, InfineonRF transistorNot recorded4 pinsInfineon
- What it is
- RF transistor
- Maker
- Infineon
- Package
- Not recorded
- Pins
- 4
- Source
- An older or alternative marking, from a published code list
Is it dead? The meter test is below: Bipolar transistor.
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.
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.
Bipolar transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
From the base, one probe colour 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.
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.
Printed with a code easy to misread as R2S
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
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