SMD code AAs
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 AA was searched.
220 parts are printed AAs
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.
MAX803ZXRSOT-3233 pins, Analog DevicesNot recordedSOT-3233 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-323
- Pins
- 3
- Details
- microproc -ve reset gen 2.5V
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX809LURSOT-233 pins, Analog DevicesNot recordedSOT-233 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-23
- Pins
- 3
- Details
- CMOS-IC: Voltage Detector 4,63V, -Reset Push-pull output
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MAX809ZXRSOT-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.
MAX824LXKSOT-3535 pins, Analog DevicesNot recordedSOT-3535 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-353
- Pins
- 5
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX2644SOT-3636 pins, Maxim IntegratedNot recordedSOT-3636 pinsMaxim Integrated
- What it is
- Not recorded
- Maker
- Maxim Integrated
- Package
- SOT-363
- Pins
- 6
- Details
- Low noise amplifier
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MAX4524ETBDFNMaxim IntegratedNot recordedDFNNot recordedMaxim Integrated
- What it is
- Not recorded
- Maker
- Maxim Integrated
- Package
- DFN
- Pins
- Not recorded
- Details
- Multiplexer and switch
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX4599ELT-TSOT-23-6Analog switch, 6 pins, Maxim IntegratedAnalog switchSOT-23-66 pinsMaxim Integrated
- What it is
- Analog switch
- Maker
- Maxim Integrated
- Package
- SOT-23-6
- Pins
- 6
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MAX5465XTSOT-3636 pins, Analog DevicesNot recordedSOT-3636 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-363
- Pins
- 6
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX6314US50D1-TSOT-1434 pins, Analog DevicesNot recordedSOT-1434 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-143
- Pins
- 4
- Details
- CMOS-IC: Voltage Detector 5V, -MR, -Reset Bidir. PPO, 1ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
6 more parts have no package on record
IXD5127N16ANRVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 1.6V±0.8%, -Reset ODO, -MR, 50ms Rt delay
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
KRA351KECNot recordedNot recordedNot recordedKEC
- What it is
- Not recorded
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- PNP transistor: Dual, Sw, 12V, 500mA, 100mW, R1/R2=1k/1k
- Source
- Published code list
Is it dead? The meter test is below: Bipolar transistor.
LR9641DC-DC converter, LRCDC-DC converterNot recordedNot recordedLRC
- What it is
- DC-DC converter
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Down converter
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
LY8010CLLyontek IncorporationNot recordedNot recordedNot recordedLyontek Incorporation
- What it is
- Not recorded
- Maker
- Lyontek Incorporation
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear IC: APA, BTL, class-D, 2.7..5.5V, 3W(5V/4), shutdown
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
LY8210CLLyontek IncorporationNot recordedNot recordedNot recordedLyontek Incorporation
- What it is
- Not recorded
- Maker
- Lyontek Incorporation
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear IC: APA, BTL, class-D, 2.7..5.5V, 2x2.5W(5V/4), separate shutdown
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MA5Z200-LZener diode, PanasonicZener diodeNot recordedNot recordedPanasonic
- What it is
- Zener diode
- Maker
- Panasonic
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 200V, Iz=0.1mA, 150mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
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.
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.
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.
Zener diode
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- Open both ways, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: 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 meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
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.
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