SMD code ANs
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.
The last letter, s, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and AN was searched.
143 parts are printed ANs
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.
2SC2532SOT-23Darlington transistor, 3 pins, ToshibaDarlington transistorSOT-233 pinsToshiba
- What it is
- Darlington transistor
- Maker
- Toshiba
- Package
- SOT-23
- Pins
- 3
- Details
- Si-npn-Darl: AF-Drv, 40V, 300mA, 150mW, B>5000
- Source
- Published code list
Is it dead? The meter test is below: Darlington transistor.
2SC4061KSOT-23NPN transistor, 3 pins, ROHMNPN transistorSOT-233 pinsROHM
- What it is
- NPN transistor
- Maker
- ROHM
- Package
- SOT-23
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC4098SOT-323NPN transistor, 3 pins, ROHMNPN transistorSOT-3233 pinsROHM
- What it is
- NPN transistor
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- NPN bipolar transistor
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC4098-NSOT-3233 pins, ROHMNot recordedSOT-3233 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- Si-npn: HF-Amp, 40V, 50mA, 200mW, B=56..120, >350MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SC4618SOT-4163 pinsNot recordedSOT-4163 pinsNot recorded
- What it is
- Not recorded
- Maker
- Not recorded
- Package
- SOT-416
- Pins
- 3
- Details
- npn HF 25V 50mA 300MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SC4618-NSOT-416NPN transistor, 3 pins, ROHMNPN transistorSOT-4163 pinsROHM
- What it is
- NPN transistor
- Maker
- ROHM
- Package
- SOT-416
- Pins
- 3
- Details
- Si-npn: HF-Amp, 40V, 50mA, 150mW, B=56..120, 300MHz
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
2SC5659SOT-7233 pins, ROHMNot recordedSOT-7233 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-723
- Pins
- 3
- Details
- npn HF 25V 50mA 300MHz
- Source
- Published code list
Is it dead? The meter test is below: This part.
2SK3287SOT-23N-channel MOSFET, 3 pins, RenesasN-channel MOSFETSOT-233 pinsRenesas
- What it is
- N-channel MOSFET
- Maker
- Renesas
- Package
- SOT-23
- Pins
- 3
- Details
- n-MOS*-e: V-MOS, LogL, 30V, 0,3A, <3,44Ω
- Source
- Published code list
Is it dead? The meter test is below: N-channel MOSFET.
2SK3289SOT-323N-channel MOSFET, 3 pins, RenesasN-channel MOSFETSOT-3233 pinsRenesas
- What it is
- N-channel MOSFET
- Maker
- Renesas
- Package
- SOT-323
- Pins
- 3
- Details
- MOSFET n-type: GP, 30V, 300mA, 400mW, 2.8(4V), 800/2200ns
- Source
- Published code list
Is it dead? The meter test is below: N-channel MOSFET.
7WB3306MUDFNonsemiNot recordedDFNNot recordedonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- DFN
- Pins
- Not recorded
- Details
- CMOS logic IC: 2-Bit bus switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AHC1G126SOT-3535 pins, PhiNot recordedSOT-3535 pinsPhi
- What it is
- Not recorded
- Maker
- Phi
- Package
- SOT-353
- Pins
- 5
- Details
- CMOS-Logic: Noninverting 3-State Buffer/CMOS LLS
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AHC1G126GWSOT-23-5Logic gate, 5 pins, NXPLogic gateSOT-23-55 pinsNXP
- What it is
- Logic gate
- Maker
- NXP
- Package
- SOT-23-5
- Pins
- 5
- Details
- Buffer
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
3 more parts have no package on record
74AHC1G126GFLogic gate, NXPLogic gateNot recordedNot recordedNXP
- What it is
- Logic gate
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Buffer
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AHC1G126GMLogic gate, NXPLogic gateNot recordedNot recordedNXP
- What it is
- Logic gate
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Buffer
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AUP1G34GFNXPNot recordedNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Noninverting buffer
- 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.
Darlington 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 collector and about 1.1 to 1.4 V to the emitter, two junctions in series, and open the other way round. Collector to emitter reads open. Built-in resistors can change these readings.
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.
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.
N-channel MOSFET
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
Red probe on the source, black on the drain: about 0.4 to 0.9 V, the body diode. Open the other way. The gate reads open to both other pins, both ways.
Dead, it reads
- Drain to source the same both ways, near 0 V with a continuous beep, and still so after shorting gate to source: shorted. The classic failure.
- The gate reads low to source or drain: gate shorted. Often all three pins end up shorted together.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, so gate to source reads that resistor, which is not a fault. A drain short can be the load. Lift a leg to be sure.
- 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 diode range can charge the gate enough to turn the part on, and then drain to source reads near 0 both ways on a good part. Short gate to source and test again before you condemn it.
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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