SMD code FS-
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.
76 parts are printed FS-
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.
2SA1037SOT-23PNP transistor, 3 pins, JSCJPNP transistorSOT-233 pinsJSCJ
- What it is
- PNP transistor
- Maker
- JSCJ
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor, 50 V, 0.15 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1037-SSOT-23PNP transistor, 3 pins, Galaxy MicroelectronicsPNP transistorSOT-233 pinsGalaxy Microelectronics
- What it is
- PNP transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- -50V, -0.15A, General Purpose PNP Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1037/AK-SSOT-23Transistor, 3 pins, YFWTransistorSOT-233 pinsYFW
- What it is
- Transistor
- Maker
- YFW
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Bipolar transistor.
2SA1037AKT146SSOT-23PNP transistor, 3 pins, HXYPNP transistorSOT-233 pinsHXY
- What it is
- PNP transistor
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor, 50 V, 0.15 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1037KSOT-23PNP transistor, 3 pins, JSCJPNP transistorSOT-233 pinsJSCJ
- What it is
- PNP transistor
- Maker
- JSCJ
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor, PNP
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1576A-SSOT-323PNP transistor, 3 pins, Galaxy MicroelectronicsPNP transistorSOT-3233 pinsGalaxy Microelectronics
- What it is
- PNP transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-323
- Pins
- 3
- Details
- -50V, -0.15A, General Purpose PNP Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1576ASSOT-323PNP transistor, 3 pins, HXYPNP transistorSOT-3233 pinsHXY
- What it is
- PNP transistor
- Maker
- HXY
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, 50 V, 0.15 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1774-SSOT-523PNP transistor, 3 pins, Galaxy MicroelectronicsPNP transistorSOT-5233 pinsGalaxy Microelectronics
- What it is
- PNP transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-523
- Pins
- 3
- Details
- -50V, -0.15A, General Purpose PNP Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA2029SOT-723PNP transistor, 3 pins, JSCJPNP transistorSOT-7233 pinsJSCJ
- What it is
- PNP transistor
- Maker
- JSCJ
- Package
- SOT-723
- Pins
- 3
- Details
- Bipolar transistor, PNP
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
BTA2029Y3SOT-723PNP transistor, 3 pins, CYStekPNP transistorSOT-7233 pinsCYStek
- What it is
- PNP transistor
- Maker
- CYStek
- Package
- SOT-723
- Pins
- 3
- Details
- -50 V, -0.15 A PNP transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
H2SA1037AKT146SSOT-23PNP transistor, 3 pins, HXYPNP transistorSOT-233 pinsHXY
- What it is
- PNP transistor
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor, 50 V, 0.15 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
L2SA1576AST1GSOT-323PNP transistor, 3 pins, LRCPNP transistorSOT-3233 pinsLRC
- What it is
- PNP transistor
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, PNP, IC 150 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
MMBT2029AMSOT-723PNP transistor, 3 pins, Good-ArkPNP transistorSOT-7233 pinsGood-Ark
- What it is
- PNP transistor
- Maker
- Good-Ark
- Package
- SOT-723
- Pins
- 3
- Details
- PNP transistor, 50 V, 0.15 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
S-L2SA1576AST1GSOT-323PNP transistor, 3 pins, LRCPNP transistorSOT-3233 pinsLRC
- What it is
- PNP transistor
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- Details
- Bipolar transistor, PNP, IC 150 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
1 more part has no package on record
L2SA1774ST1GPNP transistor, LRCPNP transistorNot recordedNot recordedLRC
- What it is
- PNP transistor
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Bipolar transistor, PNP, IC 150 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP 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.
PNP transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Black 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.
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.
Printed with a code easy to misread as FS-
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 4 more parts.
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