SMD code 7Ap
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 7A was searched.
79 parts are printed 7Ap
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.
1N4007WSSOD-323Rectifier, 2 pins, HXYRectifierSOD-3232 pinsHXY
- What it is
- Rectifier
- Maker
- HXY
- Package
- SOD-323
- Pins
- 2
- Details
- Rectifier diode, 1000 V, 1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV21WSSOD-323Switching diode, 2 pins, VishaySwitching diodeSOD-3232 pinsVishay
- What it is
- Switching diode
- Maker
- Vishay
- Package
- SOD-323
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BC807-16SOT-23PNP transistor, 3 pins, PanjitPNP transistorSOT-233 pinsPanjit
- What it is
- PNP transistor
- Maker
- Panjit
- Package
- SOT-23
- Pins
- 3
- Details
- -45 V, -500 mA PNP small-signal transistor, gain group 16
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PNP transistor.
BC807-16-AUSOT-23Transistor, 3 pins, PanjitTransistorSOT-233 pinsPanjit
- What it is
- Transistor
- Maker
- Panjit
- Package
- SOT-23
- Pins
- 3
- Details
- Bipolar transistor
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Bipolar transistor.
BRESD7V0L1B2ZPSOD-882ESD protection diode, 2 pins, Blue RocketESD protection diodeSOD-8822 pinsBlue Rocket
- What it is
- ESD protection diode
- Maker
- Blue Rocket
- Package
- SOD-882
- Pins
- 2
- Details
- ESD protection diode, bidirectional
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
DTC113EM3SOT-723Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-7233 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-723
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 1 k , R2 = 1 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
FMUN5211DWSOT-363Digital transistor (resistors built in), 6 pins, Formosa MicrosemiDigital transistor (resistors built in)SOT-3636 pinsFormosa Microsemi
- What it is
- Digital transistor (resistors built in)
- Maker
- Formosa Microsemi
- Package
- SOT-363
- Pins
- 6
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
FMUN5211DW-Q1SOT-363Digital transistor (resistors built in), 6 pins, Formosa MicrosemiDigital transistor (resistors built in)SOT-3636 pinsFormosa Microsemi
- What it is
- Digital transistor (resistors built in)
- Maker
- Formosa Microsemi
- Package
- SOT-363
- Pins
- 6
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
G754ABE1UWLCSPTemperature sensor, 4 pins, Global Mixed-mode TechnologyTemperature sensorWLCSP4 pinsGlobal Mixed-mode Technology
- What it is
- Temperature sensor
- Maker
- Global Mixed-mode Technology
- Package
- WLCSP
- Pins
- 4
- Details
- High Accuracy Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
G756ATR1GSOT-563Temperature sensor, 6 pins, Global Mixed-mode TechnologyTemperature sensorSOT-5636 pinsGlobal Mixed-mode Technology
- What it is
- Temperature sensor
- Maker
- Global Mixed-mode Technology
- Package
- SOT-563
- Pins
- 6
- Details
- High Accuracy Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
JEB07DFASOD-882TVS diode, 2 pins, JieJieTVS diodeSOD-8822 pinsJieJie
- What it is
- TVS diode
- Maker
- JieJie
- Package
- SOD-882
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
LESD8D8.0T5GSOD-882ESD protection diode, 2 pins, LRCESD protection diodeSOD-8822 pinsLRC
- What it is
- ESD protection diode
- Maker
- LRC
- Package
- SOD-882
- Pins
- 2
- Details
- ESD protection diode, VRWM 8 V, IR @VRWM 2 μA, VBR Min 8.5 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
LMUN5211DW1T1GSOT-363Digital transistor (resistors built in), 6 pins, LRCDigital transistor (resistors built in)SOT-3636 pinsLRC
- What it is
- Digital transistor (resistors built in)
- Maker
- LRC
- Package
- SOT-363
- Pins
- 6
- Details
- Digital transistor (bias resistors built in), N+N, IC 100 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
2 more parts have no package on record
EMI7112FCESD protection diode, onsemiESD protection diodeNot recordedNot recordedonsemi
- What it is
- ESD protection diode
- Maker
- onsemi
- Package
- Not recorded
- Pins
- Not recorded
- Details
- EMI Filter with ESD Protection
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
ESD3Z7.0ESD protection diode, YFWESD protection diodeNot recordedNot recordedYFW
- What it is
- ESD protection diode
- Maker
- YFW
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
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.
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.
PNP transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Black 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.
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.
TVS or ESD protection diode
Diode range, from the protected line to ground, part lifted if you can.
Working, it reads
A one-way part reads about 0.6 to 0.8 V forward and open in reverse. A two-way part reads open both ways. Arrays with several lines read as the datasheet's diagram draws them.
Dead, it reads
- From the line to ground, the same reading both ways, near 0 V with a continuous beep: shorted.
- A reading both ways on a one-way part: leaky.
- A one-way part open both ways: failed open.
- On the board
- , a line reading shorted to ground can be this part or anything else on that line. Lift it: if the short goes with it, it has failed.
- Compare:
- The same part on the next line or connector pin is the healthy reading to compare with.
- Watch for:
- A two-way part reads open both ways when it is good, exactly like one that has failed open. The meter cannot tell them apart; an identical part on the next line can.
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.
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.
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.
Printed with a code easy to misread as 7Ap
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes not listed here are printed on 1 more part.
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