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SMD code N10

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.

N10 on a chip capacitor

100 pF

100 pF capacitor

The n is both the decimal point and the unit: 100 pF.

Check it with a meter

Lift one end and measure it on a capacitance range. A good one reads close to 100 pF. In circuit the meter also sees everything connected across it, so the reading means little until it is out. A failed one usually reads near 0 Ω, or a steady low resistance, on the ohms range, often from a crack. On the board a shorted capacitor shorts its whole rail. A failed reading does not change what to fit: the marking still says 100 pF.

On a transistor or diode body (SMB, SOT-23-5, SOT-89-5), N10 is a part code instead. Those parts are listed below.

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.

  • BZT52C47SLSOD-323Zener diode, 2 pins, Good-ArkZener diodeSOD-3232 pinsGood-Ark
    What it is
    Zener diode
    Maker
    Good-Ark
    Package
    SOD-323
    Pins
    2
    Details
    Zener diode, VZ 47 V, 0.25 W
    Source
    Manufacturer datasheet

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

  • IMN10SOT-23-6Switching diode, 6 pins, ROHMSwitching diodeSOT-23-66 pinsROHM
    What it is
    Switching diode
    Maker
    ROHM
    Package
    SOT-23-6
    Pins
    6
    Details
    Switching Diode (High speed switching)
    Source
    Manufacturer datasheet

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

  • IMN10FHSOT-23-6Switching diode, 6 pins, ROHMSwitching diodeSOT-23-66 pinsROHM
    What it is
    Switching diode
    Maker
    ROHM
    Package
    SOT-23-6
    Pins
    6
    Details
    Switching Diode (High speed switching) (AEC-Q101 qualified)
    Source
    Manufacturer datasheet

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

  • LBTN1100Z4TZHGSOT-223NPN transistor, 4 pins, LRCNPN transistorSOT-2234 pinsLRC
    What it is
    NPN transistor
    Maker
    LRC
    Package
    SOT-223
    Pins
    4
    Details
    Bipolar transistor, NPN, IC 1000 mA, VCEO 100 V
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: NPN transistor.

  • LIMN10T1GSOT-363Switching diode, 6 pins, LRCSwitching diodeSOT-3636 pinsLRC
    What it is
    Switching diode
    Maker
    LRC
    Package
    SOT-363
    Pins
    6
    Details
    Switching diode, VR 80 V, IF 300 mA, VF Max 1.2 V
    Source
    Manufacturer datasheet

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

  • LN2510T1GSOT-23-6N-channel MOSFET, 6 pins, LRCN-channel MOSFETSOT-23-66 pinsLRC
    What it is
    N-channel MOSFET
    Maker
    LRC
    Package
    SOT-23-6
    Pins
    6
    Details
    MOSFET, N-Channel, VDSS 60 V, VGS 20 V
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: N-channel MOSFET.

  • S-LBTN1100Z4TZHGSOT-223NPN transistor, 4 pins, LRCNPN transistorSOT-2234 pinsLRC
    What it is
    NPN transistor
    Maker
    LRC
    Package
    SOT-223
    Pins
    4
    Details
    Bipolar transistor, NPN, IC 1000 mA, VCEO 100 V
    Source
    Manufacturer datasheet

    Is it dead? The meter test is below: NPN transistor.

  • UMN10NSOT-363Switching diode, 6 pins, ROHMSwitching diodeSOT-3636 pinsROHM
    What it is
    Switching diode
    Maker
    ROHM
    Package
    SOT-363
    Pins
    6
    Details
    Switching Diode (High speed switching)
    Source
    Manufacturer datasheet

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

  • UMN10NFHSOT-363Switching diode, 6 pins, ROHMSwitching diodeSOT-3636 pinsROHM
    What it is
    Switching diode
    Maker
    ROHM
    Package
    SOT-363
    Pins
    6
    Details
    Switching Diode (High speed switching) (AEC-Q101 qualified)
    Source
    Manufacturer datasheet

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

  • 82N10-AE3-5SOT-23Voltage supervisor, 3 pins, UnisonicVoltage supervisorSOT-233 pinsUnisonic
    What it is
    Voltage supervisor
    Maker
    Unisonic
    Package
    SOT-23
    Pins
    3
    Details
    Voltage detector IC: 1.0V±2% -Reset ODO
    Source
    Published code list

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

  • 82N10-AF5-BSOT-23-5Voltage supervisor, 5 pins, UnisonicVoltage supervisorSOT-23-55 pinsUnisonic
    What it is
    Voltage supervisor
    Maker
    Unisonic
    Package
    SOT-23-5
    Pins
    5
    Details
    Voltage detector IC: 1.0V±2% -Reset ODO
    Source
    Published code list

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

  • DDTC143FCASOT-23Digital transistor (NPN, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (NPN, resistors built in)SOT-233 pinsDiodes Incorporated
    What it is
    Digital transistor (NPN, resistors built in)
    Maker
    Diodes Incorporated
    Package
    SOT-23
    Pins
    3
    Details
    dtr npn 50V 0.1A 4k7/22k 0.2W
    Source
    Published code list

    Is it dead? The meter test is below: Digital transistor.

  • DDTC143FESOT-523Digital transistor (NPN, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (NPN, resistors built in)SOT-5233 pinsDiodes Incorporated
    What it is
    Digital transistor (NPN, resistors built in)
    Maker
    Diodes Incorporated
    Package
    SOT-523
    Pins
    3
    Details
    dtr npn 50V 0.1A 4k7/22k 0.15W
    Source
    Published code list

    Is it dead? The meter test is below: Digital transistor.

  • DDTC143FKASOT-23Digital transistor (NPN, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (NPN, resistors built in)SOT-233 pinsDiodes Incorporated
    What it is
    Digital transistor (NPN, resistors built in)
    Maker
    Diodes Incorporated
    Package
    SOT-23
    Pins
    3
    Details
    dtr npn 50V 0.1A 4k7/22k 0.2W
    Source
    Published code list

    Is it dead? The meter test is below: Digital transistor.

  • DDTC143FUASOT-323Digital transistor (NPN, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (NPN, resistors built in)SOT-3233 pinsDiodes Incorporated
    What it is
    Digital transistor (NPN, resistors built in)
    Maker
    Diodes Incorporated
    Package
    SOT-323
    Pins
    3
    Details
    dtr npn 50V 0.1A 4k7/22k 0.2W
    Source
    Published code list

    Is it dead? The meter test is below: Digital transistor.

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.

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.

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.

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.

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.

Digital transistor

Ohms range, part lifted. The datasheet gives the built-in resistors: R1 in series with the base, R2 from base to emitter.

Working, it reads

Base to emitter reads about R1 plus R2 either way round, about 20 kΩ on a 10 k and 10 k part, give or take their wide tolerance. Collector to emitter reads open. A part with no R2 reads a junction behind R1 one way instead.

Dead, it reads

  • Collector to emitter the same both ways, near 0 Ω with a continuous beep: shorted.
  • From the base, open or far above R1 plus R2: R1 has failed. Static damage shows here most often.
  • Base to emitter near 0 Ω: failed short.
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:
The readings depend on the resistor values, so an identical part elsewhere on the board is the surest reference. Measure it the same way.
Watch for:
On the diode range a good part with 10 kΩ resistors reads open on every pair, so a good part looks dead there. Use the ohms range.

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 N10

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 N10

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 98 more parts.

Did you find your part?

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