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SMD code C2p

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, p, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and C2 was searched.

233 parts are printed C2p

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.

  • UDZS5.6BSOD-323Zener diode, 2 pins, ROHMZener diodeSOD-3232 pinsROHM
    What it is
    Zener diode
    Maker
    ROHM
    Package
    SOD-323
    Pins
    2
    Details
    Z-diode: 5,6V±2,5%, 5mA, 200mW
    Source
    Published code list

    Is it dead? The meter test is below: Zener diode.

  • XC61CC2202MSOT-233 pins, TorexNot recordedSOT-233 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-23
    Pins
    3
    Details
    CMOS-IC: Voltage Detector 2,2V, Reset Push-pull output
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • XC61CC2202NSOT-1434 pins, TorexNot recordedSOT-1434 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-143
    Pins
    4
    Details
    CMOS-IC: Voltage Detector 2,2V, Reset Push-pull output
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • XC61CC2202PSOT-893 pins, TorexNot recordedSOT-893 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-89
    Pins
    3
    Details
    CMOS-IC: Voltage Detector 2,2V, Reset Push-pull output
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • XC66DC2221MSOT-23-55 pins, TorexNot recordedSOT-23-55 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    Linear voltage regulator with volatge detector: LDO, 2.1V±2%, 100mA, Vdet=2.2V±2%, +Reset PPO
    Source
    Published code list

    Is it dead? The meter test is below: Voltage regulator.

  • XC66DC2241MSOT-23-55 pins, TorexNot recordedSOT-23-55 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    Linear voltage regulator with volatge detector: LDO, 4.1V±2%, 100mA, Vdet=2.2V±2%, +Reset PPO
    Source
    Published code list

    Is it dead? The meter test is below: Voltage regulator.

  • XC66DN2221MSOT-23-55 pins, TorexNot recordedSOT-23-55 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    Linear voltage regulator with volatge detector: LDO, 2.1V±2%, 100mA, Vdet=2.2V±2%, +Reset ODO
    Source
    Published code list

    Is it dead? The meter test is below: Voltage regulator.

  • XC66DN2241MSOT-23-55 pins, TorexNot recordedSOT-23-55 pinsTorex
    What it is
    Not recorded
    Maker
    Torex
    Package
    SOT-23-5
    Pins
    5
    Details
    Linear voltage regulator with volatge detector: LDO, 4.1V±2%, 100mA, Vdet=2.2V±2%, +Reset ODO
    Source
    Published code list

    Is it dead? The meter test is below: Voltage regulator.

  • 7 more parts have no package on record
    • TDZV5.6Zener diode, ROHMZener diodeNot recordedNot recordedROHM
      What it is
      Zener diode
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 5.1..6.1V, Izt=10mA, 500mW
      Source
      Published code list

      Is it dead? The meter test is below: Zener diode.

    • TK65932MToko AmericaNot recordedNot recordedNot recordedToko America
      What it is
      Not recorded
      Maker
      Toko America
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear IC: Fluorescent lamp driver, 97mA, 225Hz
      Source
      Published code list

      Is it dead? The meter test is below: Integrated circuit.

    • uPC8128TRF amplifier (MMIC), NEC ElectronicsRF amplifier (MMIC)Not recordedNot recordedNEC Electronics
      What it is
      RF amplifier (MMIC)
      Maker
      NEC Electronics
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Monolithic microwave IC: Cell/cordl-ph. buff-amp, Ucc=2.4..3.6V, 800..1900MHz
      Source
      Published code list

      Is it dead? The meter test is below: RF amplifier.

    • VDZFH5.6BZener diode, ROHMZener diodeNot recordedNot recordedROHM
      What it is
      Zener diode
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Zener diode: 5.6V±5%, Izt=5mA, 100mW
      Source
      Published code list

      Is it dead? The meter test is below: Zener diode.

    • VDZS5.6BROHMNot recordedNot recordedNot recordedROHM
      What it is
      Not recorded
      Maker
      ROHM
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Z-diode: 5,6V±5%, 5mA, 100mW
      Source
      Published code list

      Is it dead? The meter test is below: Silicon diode.

    • XC6GC2202HRTorexNot recordedNot recordedNot recordedTorex
      What it is
      Not recorded
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      CMOS-IC: Voltage Detector 2,2V, Reset Push-pull output
      Source
      Published code list

      Is it dead? The meter test is below: Integrated circuit.

    • XC6223B121NR-GLDO regulator, TorexLDO regulatorNot recordedNot recordedTorex
      What it is
      LDO regulator
      Maker
      Torex
      Package
      Not recorded
      Pins
      Not recorded
      Details
      Linear voltage regulator IC: LDO, 1.2V±20mV, 300mA, +CE, CL
      Source
      Published code list

      Is it dead? The meter test is below: Voltage regulator.

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.

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.

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.

RF amplifier

Voltage, board powered, on the output pin that the bias resistor or choke feeds.

Working, it reads

The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.

Dead, it reads

  • Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
  • Output pin at the full supply voltage: open inside, no current flowing.
On the board:
Measured on the board with power on; the bias network is part of the reading.
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 figures depend on the part and its bias resistor. The datasheet gives both.

A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.

Silicon diode

Diode range, part lifted or one leg off the pad. Red probe on the anode.

Working, it reads

About 0.5 to 0.8 V anode to cathode, and open the other way. Small switching diodes read about 0.6 to 0.7 V; large rectifiers can read a little lower.

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: failed open.
  • A reading the wrong way round as well: 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 three-pin body can hold two diodes. With a common pin they read two junctions from that pin, just like a transistor; in series they read two drops end to end. Test each pair the datasheet names.

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.

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