SMD code AAH
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.
30 parts are printed AAH
Not sure which one you have?
Answer up to 4 quick questions and these 30 parts are ranked, with a meter test that settles it. It works on a dead part too.
NCS2001SN2SOT-23-5Operational amplifier, 5 pins, onsemiOperational amplifierSOT-23-55 pinsonsemi
- What it is
- Operational amplifier
- Maker
- onsemi
- Package
- SOT-23-5
- Pins
- 5
- Details
- 0.9 V, Rail to Rail, Single Operational Amplifier
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
MAX4594EXKSOT-3535 pins, Maxim Integrated ProductsNot recordedSOT-3535 pinsMaxim Integrated Products
- What it is
- Not recorded
- Maker
- Maxim Integrated Products
- Package
- SOT-353
- Pins
- 5
- Details
- CMOS logic IC: Single SPST analog switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
MAX4594XKSOT-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.
MAX6326_R22-TSOT-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 2.200V
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX6326XR22-TSOT-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.
MAX6712LXSSOT-3434 pins, Analog DevicesNot recordedSOT-3434 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- SOT-343
- Pins
- 4
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX9030XTSOT-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.
MCP73831T-3ACI/MCDFN8 pins, MicrochipNot recordedDFN8 pinsMicrochip
- What it is
- Not recorded
- Maker
- Microchip
- Package
- DFN
- Pins
- 8
- Source
- Published code list
Is it dead? The meter test is below: This part.
PAM3101AAA280SOT-23LDO regulator, 3 pins, Power Analog MicroelectronicsLDO regulatorSOT-233 pinsPower Analog Microelectronics
- What it is
- LDO regulator
- Maker
- Power Analog Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 2.8V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
PAM3101DAB280SOT-23-5LDO regulator, 5 pins, Power Analog MicroelectronicsLDO regulatorSOT-23-55 pinsPower Analog Microelectronics
- What it is
- LDO regulator
- Maker
- Power Analog Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.8V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
5 more parts have no package on record
NCP629FC50LDO regulator, onsemiLDO regulatorNot recordedNot recordedonsemi
- What it is
- LDO regulator
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- High Performance CMOS LDO Regulator with Enable and Enhanced ESD Protection in Chip Scale Package (CSP)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
MAX1819BL159 pins, Analog DevicesNot recordedNot recorded9 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- Not recorded
- Pins
- 9
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX2307BC12 pins, Analog DevicesNot recordedNot recorded12 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- Not recorded
- Pins
- 12
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX2647BT6 pins, Analog DevicesNot recordedNot recorded6 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- Not recorded
- Pins
- 6
- Source
- Published code list
Is it dead? The meter test is below: This part.
MAX6400BS294 pins, Analog DevicesNot recordedNot recorded4 pinsAnalog Devices
- What it is
- Not recorded
- Maker
- Analog Devices
- Package
- Not recorded
- Pins
- 4
- 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.
Voltage regulator
Voltage, board powered, black probe on ground. Then ohms with the power off.
Working, it reads
Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.
Dead, it reads
- Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
- Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
- Power off, input to output near 0 Ω: shorted.
- On the board:
- An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
- Compare:
- The same regulator on another rail or another board shows the right voltages and the right resistances.
- Watch for:
- Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.
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.
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.
Codes that begin with AAH
For a marking with its end worn or burnt off. Each code has a page of its own.
Codes not listed here are printed on 31 more parts.
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