SMD code 632

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.

13 parts are printed 632

Not sure which one you have?

Answer up to 4 quick questions and these 13 parts are ranked, with a meter test that settles it. It works on a dead part too.

EC880632C5SOT-353LDO regulator, 5 pins, E-CMOSLDO regulatorSOT-3535 pinsE-CMOS
What it is
LDO regulator
Maker
E-CMOS
Package
SOT-353
Pins
5
Details
Linear voltage regulator IC: LDO, 3.2V±2%, 300mA, +CE
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
ELM991021ACSOT-89LDO regulator, 3 pins, ELM TechnologyLDO regulatorSOT-893 pinsELM Technology
What it is
LDO regulator
Maker
ELM Technology
Package
SOT-89
Pins
3
Details
Linear voltage regulator IC: LDO, 10.2V±2%, 300mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
IXD2111B321MRSOT-23DC-DC converter, 3 pins, IXYSDC-DC converterSOT-233 pinsIXYS
What it is
DC-DC converter
Maker
IXYS
Package
SOT-23
Pins
3
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD2111B321PRSOT-89DC-DC converter, 3 pins, IXYSDC-DC converterSOT-893 pinsIXYS
What it is
DC-DC converter
Maker
IXYS
Package
SOT-89
Pins
3
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD2111D321MRSOT-23-5DC-DC converter, 5 pins, IXYSDC-DC converterSOT-23-55 pinsIXYS
What it is
DC-DC converter
Maker
IXYS
Package
SOT-23-5
Pins
5
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA, +CE
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
R1114N321DSOT-23-55 pins, Nisshinbo Micro DevicesNot recordedSOT-23-55 pinsNisshinbo Micro Devices
What it is
Not recorded
Maker
Nisshinbo Micro Devices
Package
SOT-23-5
Pins
5
Details
VR-IC: LDO, LN, CE, auto discharge, 3.2V±2%, 150mA
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
R1191N032DSOT-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, 3.2V±1.5%, 300mA, +CE, ECO, CL
Source
Published code list
Is it dead? The meter test is below: Voltage regulator.
XC9111B321MRSOT-23DC-DC converter, 3 pins, TorexDC-DC converterSOT-233 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
SOT-23
Pins
3
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9111B321PRSOT-89DC-DC converter, 3 pins, TorexDC-DC converterSOT-893 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
SOT-89
Pins
3
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9111D321MRSOT-23-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-23-55 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
SOT-23-5
Pins
5
Details
DC/DC voltage converter IC: PFM st-up, 100kHz, 3.2V±2.5%, 400mA, +CE
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9206A323MSOT-23-5DC-DC converter, 5 pins, TorexDC-DC converterSOT-23-55 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
SOT-23-5
Pins
5
Details
DC/DC voltage converter IC: PWM st-dwn, 300kHz, 3.2V±2%, 600mA, +CE
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
2 more parts have no package on record
- FDMA7632N-channel MOSFET, onsemiN-channel MOSFETNot recordedNot recordedonsemi
  What it is
  N-channel MOSFET
  Maker
  onsemi
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Single N-Channel PowerTrench MOSFET
  Source
  Manufacturer datasheet
  Is it dead? The meter test is below: N-channel MOSFET.
  Datasheetfor FDMA7632, opens in a new tab
- KIC7632T5Voltage supervisor, KECVoltage supervisorNot recordedNot recordedKEC
  What it is
  Voltage supervisor
  Maker
  KEC
  Package
  Not recorded
  Pins
  Not recorded
  Details
  Voltage detector IC: 3.2V±1%, -Reset ODO
  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.

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.

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.

Printed with a code easy to misread as 632

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

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