SMD code ABN

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.

21 parts are printed ABN

Not sure which one you have?

Answer up to 4 quick questions and these 21 parts are ranked, with a meter test that settles it. It works on a dead part too.

APL5102-29SOT-23LDO regulator, 3 pins, AnpecLDO regulatorSOT-233 pinsAnpec
What it is
LDO regulator
Maker
Anpec
Package
SOT-23
Pins
3
Details
150mA, 4µA Quiescent Current Regulator
Source
Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
Datasheetfor APL5102-29, opens in a new tab
AME8800FEETSOT-23LDO regulator, 3 pins, AMELDO regulatorSOT-233 pinsAME
What it is
LDO regulator
Maker
AME
Package
SOT-23
Pins
3
Details
Linear voltage regulator IC: LDO, 3.6V±1.5%, 300mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
AME8800FEETZSOT-23LDO regulator, 3 pins, AMELDO regulatorSOT-233 pinsAME
What it is
LDO regulator
Maker
AME
Package
SOT-23
Pins
3
Details
Linear voltage regulator IC: LDO, 3.6V±1.5%, 300mA, L-free
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
APL5102-29AISOT-23LDO regulator, 3 pins, Anpec ElectronicsLDO regulatorSOT-233 pinsAnpec Electronics
What it is
LDO regulator
Maker
Anpec Electronics
Package
SOT-23
Pins
3
Details
Linear voltage regulator IC: LDO, 2.9V±2%, 150mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
APL5102-29BISOT-23-5LDO regulator, 5 pins, Anpec ElectronicsLDO regulatorSOT-23-55 pinsAnpec Electronics
What it is
LDO regulator
Maker
Anpec Electronics
Package
SOT-23-5
Pins
5
Details
Linear voltage regulator IC: LDO, 2.9V±2%, 150mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
FAN2509S285XSOT-23-5LDO regulator, 5 pins, Fairchild SemiconductorLDO regulatorSOT-23-55 pinsFairchild Semiconductor
What it is
LDO regulator
Maker
Fairchild Semiconductor
Package
SOT-23-5
Pins
5
Details
Linear voltage regulator IC: LDO, 2.85V±2%, 50mA, +CE, Error
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
LM4040AIX3-2.5SOT-3233 pins, Analog DevicesNot recordedSOT-3233 pinsAnalog Devices
What it is
Not recorded
Maker
Analog Devices
Package
SOT-323
Pins
3
Details
2.5001% shunt V ref
Source
Published code list
Is it dead? The meter test is below: This part.
MAX988XKSOT-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.
RP107N221DSOT-23-5LDO regulator, 5 pins, RicohLDO regulatorSOT-23-55 pinsRicoh
What it is
LDO regulator
Maker
Ricoh
Package
SOT-23-5
Pins
5
Details
Linear voltage regulator IC: LDO, 2.2V±1%, 200mA, +CE, CL
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
6 more parts have no package on record
- AME8800FEETLLDO regulator, AMELDO regulatorNot recordedNot recordedAME
  What it is
  LDO regulator
  Maker
  AME
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Linear voltage regulator IC: LDO, 3.6V±1.5%, 300mA
  Source
  Published code list
  Is it dead? The meter test is below: Voltage regulator.
- AME8800FEETYLDO regulator, AMELDO regulatorNot recordedNot recordedAME
  What it is
  LDO regulator
  Maker
  AME
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Linear voltage regulator IC: LDO, 3.6V±1.5%, 300mA, L-free
  Source
  Published code list
  Is it dead? The meter test is below: Voltage regulator.
- MAX1278YTB10 pins, Analog DevicesNot recordedNot recorded10 pinsAnalog Devices
  What it is
  Not recorded
  Maker
  Analog Devices
  Package
  Not recorded
  Pins
  10
  Source
  Published code list
  Is it dead? The meter test is below: This part.
- MAX6401BS234 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.
- MAX6484BL33BD3Maxim Integrated ProductsNot recordedNot recordedNot recordedMaxim Integrated Products
  What it is
  Not recorded
  Maker
  Maxim Integrated Products
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Linear voltage regulator with volatge detector: LDO, 3.3V±1.3%, 300mA, -Reset ODO, FB, +CE
  Source
  Published code list
  Is it dead? The meter test is below: Voltage regulator.
- MAX9712EBC-TAnalog DevicesNot recordedNot recordedNot recordedAnalog Devices
  What it is
  Not recorded
  Maker
  Analog Devices
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Lin-IC: AF PA, D, BTL, 2,2..5,5V, 500mW(3V/8Ω), shutdown
  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.

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.

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.

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.

Printed with a code easy to misread as ABN

One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.

A8N4

Codes that begin with ABN

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 5 more parts.

Did you find your part?

Open this in the search to correct a character or try another package.