SMD code 2C9

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.

14 parts are printed 2C9

Not sure which one you have?

Answer up to 4 quick questions and these 14 parts are ranked, with a meter test that settles it. It works on a dead part too.

SGM40571-436AEJMFYTHN10GDFNBattery charger, 10 pins, SG MicroBattery chargerDFN10 pinsSG Micro
What it is
Battery charger
Maker
SG Micro
Package
DFN
Pins
10
Details
1A, Single-Input, Single-Cell Li-Ion and Li-Poly Battery Charger
Source
Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
Datasheetfor SGM40571-436AEJMFYTHN10G, opens in a new tab
SMB2EZ75D5SMBZener diode, 2 pins, DOWOZener diodeSMB2 pinsDOWO
What it is
Zener diode
Maker
DOWO
Package
SMB
Pins
2
Source
Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
Datasheetfor SMB2EZ75D5, opens in a new tab
AC847CQSOT-23NPN transistor, 3 pins, Diodes IncorporatedNPN transistorSOT-233 pinsDiodes Incorporated
What it is
NPN transistor
Maker
Diodes Incorporated
Package
SOT-23
Pins
3
Details
NPN transistor: 50V, 100mA, 310mW, B=420..800, 300Mhz
Source
Published code list
Is it dead? The meter test is below: NPN transistor.
IXD3235F29CER-GUSP-6CDC-DC converter, 6 pins, IXYSDC-DC converterUSP-6C6 pinsIXYS
What it is
DC-DC converter
Maker
IXYS
Package
USP-6C
Pins
6
Details
DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD3235F29CMR-GSOT-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: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
SMA2EZ75D5SMAZener diode, 2 pins, Anova TechnologiesZener diodeSMA2 pinsAnova Technologies
What it is
Zener diode
Maker
Anova Technologies
Package
SMA
Pins
2
Details
Zener diode, 24 V
Source
Published code list
Is it dead? The meter test is below: Zener diode.
Datasheetfor SMA2EZ75D5, opens in a new tab
XC6103C340MRSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
What it is
Voltage supervisor
Maker
Torex
Package
SOT-23-5
Pins
5
Details
CMOS-IC: VDet 4.0V, 5%, Hst, -MR, Reset PPO, Wt=100ms, Rt=50ms
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9235F29CER-GUSP-6CDC-DC converter, 6 pins, TorexDC-DC converterUSP-6C6 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
USP-6C
Pins
6
Details
DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XC9235F29CMR-GSOT-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, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
XD9260B29CER-QUSP-6CDC-DC converter, 6 pins, TorexDC-DC converterUSP-6C6 pinsTorex
What it is
DC-DC converter
Maker
Torex
Package
USP-6C
Pins
6
Details
DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 1.5A, 1.2MHz, +CE, CL, ShPr
Source
Published code list
Is it dead? The meter test is below: Integrated circuit.
4 more parts have no package on record
- IXD3235F29C0R-GDC-DC converter, IXYSDC-DC converterNot recordedNot recordedIXYS
  What it is
  DC-DC converter
  Maker
  IXYS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- IXD3235F29C4R-GDC-DC converter, IXYSDC-DC converterNot recordedNot recordedIXYS
  What it is
  DC-DC converter
  Maker
  IXYS
  Package
  Not recorded
  Pins
  Not recorded
  Details
  DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- XC9235F29C0R-GDC-DC converter, TorexDC-DC converterNot recordedNot recordedTorex
  What it is
  DC-DC converter
  Maker
  Torex
  Package
  Not recorded
  Pins
  Not recorded
  Details
  DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
  Source
  Published code list
  Is it dead? The meter test is below: Integrated circuit.
- XC9235F29C4R-GDC-DC converter, TorexDC-DC converterNot recordedNot recordedTorex
  What it is
  DC-DC converter
  Maker
  Torex
  Package
  Not recorded
  Pins
  Not recorded
  Details
  DC/DC voltage converter IC: PWM, st-dwn, 2.9V±2%, 600mA, 1.2MHz, Vin>1.8V, HSST, CL
  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.

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.

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.

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.

Printed with a code easy to misread as 2C9

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

Codes that begin with 2C9

For a marking with its end worn or burnt off. Each code has a page of its own.

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