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SMD code 47P

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.

47P on a chip capacitor

47 pF

47 pF capacitor

The p is both the decimal point and the unit: 47 pF.

Check it with a meter

Lift one end and measure it on a capacitance range. A good one reads close to 47 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 47 pF.

On a transistor or diode body (SOT-363, SOT-563), 47P is a part code instead. Those parts are listed below.

3 parts are printed 47P

Not sure which one you have?

Answer up to 4 quick questions and these 3 parts are ranked, with a meter test that settles it. It works on a dead part too.

6 pins, all Panjit. What differs:

  • BC847BPNSOT-363Complementary transistor pair (NPN and PNP)
    What it is
    Complementary transistor pair (NPN and PNP)
    Maker
    Panjit
    Package
    SOT-363
    Pins
    6
    Details
    45 V, 100 mA NPN/PNP general-purpose transistor pair
    Source
    From the manufacturer's datasheet

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

    Datasheetfor BC847BPN, opens in a new tab
  • BC847BPN-AUSOT-363Transistor
    What it is
    Transistor
    Maker
    Panjit
    Package
    SOT-363
    Pins
    6
    Details
    Bipolar transistor
    Source
    From the manufacturer's datasheet

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

    Datasheetfor BC847BPN-AU, opens in a new tab
  • BC847BPNTB6SOT-563Transistor
    What it is
    Transistor
    Maker
    Panjit
    Package
    SOT-563
    Pins
    6
    Details
    Bipolar transistor
    Source
    From the manufacturer's datasheet

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

    Datasheetfor BC847BPNTB6, opens in a new tab

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.

Bipolar transistor pair

Diode range, part lifted. Test each transistor on its own pins, as the datasheet's pinout gives them.

Working, it reads

From the base, one probe colour 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.

Bipolar transistor

Diode range, part lifted or its base leg off the pad.

Working, it reads

From the base, one probe colour 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.

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