SMD code FQ 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.
9 parts in SOT-323 are printed FQ
Not sure which one you have?
Answer up to 4 quick questions and these 19 parts are ranked, with a meter test that settles it. It works on a dead part too.
2SA1576A-QSOT-323PNP transistor, Galaxy MicroelectronicsPNP transistorGalaxy 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.
2SA1576AQSOT-323PNP transistor, HXYPNP transistorHXY
- 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.
L2SA1576AQT1GSOT-323PNP transistor, LRCPNP transistorLRC
- 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.
S-L2SA1576AQT1GSOT-323PNP transistor, LRCPNP transistorLRC
- 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.
T2SA1576A-QSOT-323PNP transistor, Galaxy MicroelectronicsPNP transistorGalaxy 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.
2SA1576ASOT-323PNP transistor, HXYPNP transistorHXY
- What it is
- PNP transistor
- Maker
- HXY
- Package
- SOT-323
- Pins
- 3
- Details
- PNP bipolar transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
2SA1576-QSOT-323PNP transistor, ROHMPNP transistorROHM
- What it is
- PNP transistor
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- Si-pnp: GP, 60V, 100mA, 150mW, B=120..270, 140MHz
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
2SA1576UBQSOT-323ROHMNot recordedROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- equivalent 2SA933ASQ
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SB1618SOT-323PNP transistor, PanasonicPNP transistorPanasonic
- What it is
- PNP transistor
- Maker
- Panasonic
- Package
- SOT-323
- Pins
- 3
- Details
- PNP transistor: AF, Lo-sat, 10V, 500mA, 150mW, B=200..800, 120MHz
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
6 more parts have no package on record. Nothing rules them out, so they stay.
L2SA1774QT1GPNP transistor, LRCPNP transistorLRC
- 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.
S-L2SA1774QT1GPNP transistor, LRCPNP transistorLRC
- 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.
TC8-1X+RF transformer, Mini-CircuitsRF transformerMini-Circuits
- What it is
- RF transformer
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- RF transformer, 2-500 MHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: This part.
2SA1576UBPNP transistor, ROHMPNP transistorROHM
- What it is
- PNP transistor
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
2SA1774EBPNP transistor, ROHMPNP transistorROHM
- What it is
- PNP transistor
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
2SA1774EBQROHMNot recordedROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- Not recorded
- Pins
- 3
- Details
- equivalent 2SA933ASQ
- Source
- Published code list
Is it dead? The meter test is below: This part.
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.
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.
Printed with a code easy to misread as FQ
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Did you find your part?
Open this in the search to correct a character or try another package.