SMD code PDs
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, s, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and PD was searched.
132 parts are printed PDs
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.
DMP510DL-7SOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
HBSS84AK215SOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
HBSS84AKVLSOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
HSBSS84LT1GSOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
KRA104SSOT-23Digital transistor (PNP, resistors built in), 3 pins, KECDigital transistor (PNP, resistors built in)SOT-233 pinsKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA304SOT-323Digital transistor (PNP, resistors built in), 3 pins, KECDigital transistor (PNP, resistors built in)SOT-3233 pinsKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- SOT-323
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
LBSS84-HXYSOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
LBSS84DW1T1GSOT-363P-channel MOSFET, 6 pins, LRCP-channel MOSFETSOT-3636 pinsLRC
- What it is
- P-channel MOSFET
- Maker
- LRC
- Package
- SOT-363
- Pins
- 6
- Details
- MOSFET, P-Channel, VDSS 50 V, VGS 20 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
LBSS84LT1GSOT-23P-channel MOSFET, 3 pins, HXYP-channel MOSFETSOT-233 pinsHXY
- What it is
- P-channel MOSFET
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- P-channel MOSFET, 50 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
6 more parts have no package on record
KRA304EDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA304VDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA554EDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA554UDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA754EDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
KRA754UDigital transistor (PNP, resistors built in), KECDigital transistor (PNP, resistors built in)Not recordedNot recordedKEC
- What it is
- Digital transistor (PNP, resistors built in)
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
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.
P-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 drain, black on the source: 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. 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.
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.
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