SMD code P82
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.
P82 on a chip capacitor
0.82 pF
0.82 pF capacitor
The p is both the decimal point and the unit: 0.82 pF.
Check it with a meter
Lift one end and measure it on a capacitance range. A good one reads close to 0.82 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 0.82 pF.
On a transistor or diode body (USP-6B, SOT-23, SOT-89), P82 is a part code instead. Those parts are listed below.
7 parts are printed P82
Not sure which one you have?
Answer up to 4 quick questions and these 7 parts are ranked, with a meter test that settles it. It works on a dead part too.
2SD882GPSOT-89NPN transistor, 3 pins, ChenmkoNPN transistorSOT-893 pinsChenmko
- What it is
- NPN transistor
- Maker
- Chenmko
- Package
- SOT-89
- Pins
- 3
- Details
- NPN Epitaxial Transistor, 30 V, 3 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SD882GP-ASOT-89NPN transistor, 3 pins, ChenmkoNPN transistorSOT-893 pinsChenmko
- What it is
- NPN transistor
- Maker
- Chenmko
- Package
- SOT-89
- Pins
- 3
- Details
- NPN Epitaxial Transistor, 30 V, 3 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: NPN transistor.
2SD882PT-PSOT-89NPN transistor, 3 pins, Chenmko EnterpriseNPN transistorSOT-893 pinsChenmko Enterprise
- What it is
- NPN transistor
- Maker
- Chenmko Enterprise
- Package
- SOT-89
- Pins
- 3
- Details
- NPN transistor: AF, Sw, 30V, 3A, B=160..320, 100MHz
- Source
- Published code list
Is it dead? The meter test is below: NPN transistor.
DDA142JHSOT-5636 pins, Diodes IncorporatedNot recordedSOT-5636 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-563
- Pins
- 6
- Details
- Si-pnp-Digi: Dual, Sw, 50V, 100mA, 150mW, R1/R2=0.47k/10k
- Source
- Published code list
Is it dead? The meter test is below: This part.
DDA142JUSOT-3636 pins, Diodes IncorporatedNot recordedSOT-3636 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-363
- Pins
- 6
- Details
- Si-pnp-Digi: Dual, Sw, 50V, 100mA, 200mW, R1/R2=0.47k/10k
- Source
- Published code list
Is it dead? The meter test is below: This part.
DDTA142JESOT-523Digital transistor (PNP, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (PNP, resistors built in)SOT-5233 pinsDiodes Incorporated
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- Diodes Incorporated
- Package
- SOT-523
- Pins
- 3
- Details
- Si-pnp-Digi: Sw, 50V, 100mA, 150mW, 250MHz, R1/R2=0,47k/10k
- Source
- Published code list
Is it dead? The meter test is below: Digital transistor.
DDTA142JUSOT-23Digital transistor (PNP, resistors built in), 3 pins, Diodes IncorporatedDigital transistor (PNP, resistors built in)SOT-233 pinsDiodes Incorporated
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- Diodes Incorporated
- Package
- SOT-23
- Pins
- 3
- Details
- Si-pnp-Digi: Sw, 50V, 100mA, 200mW, 250MHz, R1/R2=0,47k/10k
- 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.
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.
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.
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 P82
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 P82
For a marking with its end worn or burnt off. Each code has a page of its own.
- P82A1
- P82C1
- PB2A61
- PB2AC1
- PB2B61
- PB2BC1
- PB2C61
- PB2CC1
- PB2D61
- PB2DC1
- PB2E61
- PB2EC1
- PB2F61
- PB2FC1
- PB2H61
- PB2HC1
- PB2K61
- PB2KC1
- PB2L61
- PB2LC1
- PB2M61
- PB2MC1
- PB20C1
- PB21C1
- PB22C1
- PB23C1
- PB24C1
- PB25C1
- PB26C1
- PB27C1
- PB28C1
- PB29C1
- PB2061
- PB2161
- PB2261
- PB2361
- PB2461
- PB2561
- PB2661
Codes not listed here are printed on 3 more parts.
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