SMD code RF in SOT-89
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-89 are printed RF
Not sure which one you have?
Answer up to 4 quick questions and these 33 parts are ranked, with a meter test that settles it. It works on a dead part too.
2SC3357-FSOT-89NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-89
- Pins
- 3
- Details
- 12V, 0.1A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SC3357-RFSOT-89NPN transistor, 3 pins, HXYNPN transistor3 pinsHXY
- What it is
- NPN transistor
- Maker
- HXY
- Package
- SOT-89
- Pins
- 3
- Details
- Bipolar transistor, 12 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
H2SC3357-RFSOT-89NPN transistor, 3 pins, HXYNPN transistor3 pinsHXY
- What it is
- NPN transistor
- Maker
- HXY
- Package
- SOT-89
- Pins
- 3
- Details
- Bipolar transistor, 12 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
L2SC3357SOT-89RF transistor, 3 pins, LRCRF transistor3 pinsLRC
- What it is
- RF transistor
- Maker
- LRC
- Package
- SOT-89
- Pins
- 3
- Details
- RF transistor, NPN, IC 210 mA, VCEO 15 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Bipolar transistor.
T2SC3357-FSOT-89NPN transistor, 3 pins, Galaxy MicroelectronicsNPN transistor3 pinsGalaxy Microelectronics
- What it is
- NPN transistor
- Maker
- Galaxy Microelectronics
- Package
- SOT-89
- Pins
- 3
- Details
- 12V, 0.1A, General Purpose NPN Bipolar Transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SC3357SOT-89NPN transistor, 3 pins, HXYNPN transistor3 pinsHXY
- What it is
- NPN transistor
- Maker
- HXY
- Package
- SOT-89
- Pins
- 3
- Details
- NPN bipolar transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
H2SC3357SOT-89NPN transistor, 3 pins, HXYNPN transistor3 pinsHXY
- What it is
- NPN transistor
- Maker
- HXY
- Package
- SOT-89
- Pins
- 3
- Details
- Bipolar transistor, 12 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SC5336-FSOT-893 pins, NEC ElectronicsNot recorded3 pinsNEC Electronics
- What it is
- Not recorded
- Maker
- NEC Electronics
- Package
- SOT-89
- Pins
- 3
- Details
- Si-npn: HF, 20V, 100mA, 1.2W, 5GHz, B=80..160
- Source
- Published code list
Is it dead? The meter test is below: This part.
NE85634-FSOT-893 pins, California Eastern LaboratoriesNot recorded3 pinsCalifornia Eastern Laboratories
- What it is
- Not recorded
- Maker
- California Eastern Laboratories
- Package
- SOT-89
- Pins
- 3
- Details
- Si-npn: VHF/UHF, CATV, 20V, 100mA, 1.2W, B=80..160, 6.5GHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
6 more parts have no package on record. Nothing rules them out, so they stay.
LFCN-120+RF filter, Mini-CircuitsRF filterNot recordedMini-Circuits
- What it is
- RF filter
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- LTCC filter
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: This part.
NSR201MXSchottky diode, onsemiSchottky diodeNot recordedonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Schottky Barrier Diode for Mixer and Detector
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
NSVR201MXSchottky diode, onsemiSchottky diodeNot recordedonsemi
- What it is
- Schottky diode
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Schottky Barrier Diode for Mixer and Detector
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
2SC5336RF4 pins, RenesasNot recorded4 pinsRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- Not recorded
- Pins
- 4
- Source
- Published code list
Is it dead? The meter test is below: This part.
74AXP1G14GMNXPNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter with Schmitt-trigger input
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AXP1G14GNNXPNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Inverter with Schmitt-trigger input
- 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.
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.
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.
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.
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.
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