SMD code A7s
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 A7 was searched.
266 parts are printed A7s
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.
74AUP1T57GWSOT-3636 pins, NXPNot recordedSOT-3636 pinsNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- SOT-363
- Pins
- 6
- Details
- CMOS logic IC: Configurable gate with voltage-level translator
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
AP431AWSOT-233 pins, AnachipNot recordedSOT-233 pinsAnachip
- What it is
- Not recorded
- Maker
- Anachip
- Package
- SOT-23
- Pins
- 3
- Details
- Vref-IC: Adjustable, Precision, Shunt, 2,495V±0,5%
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
Bav99SOT-23Switching diode, 3 pins, Fairchild SemiconductorSwitching diodeSOT-233 pinsFairchild Semiconductor
- What it is
- Switching diode
- Maker
- Fairchild Semiconductor
- Package
- SOT-23
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99LT1SOT-233 pins, onsemiNot recordedSOT-233 pinsonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
BAV99LT1GSOT-233 pins, onsemiNot recordedSOT-233 pinsonsemi
- What it is
- Not recorded
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Diodes
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99PTSOT-233 pins, Chenmko EnterpriseNot recordedSOT-233 pinsChenmko Enterprise
- What it is
- Not recorded
- Maker
- Chenmko Enterprise
- Package
- SOT-23
- Pins
- 3
- Details
- Diode: Dual, Sw, 85V, 150mA, Vf<1.25V(150mA), 4ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99SSOT-363Switching diode, 6 pins, InfineonSwitching diodeSOT-3636 pinsInfineon
- What it is
- Switching diode
- Maker
- Infineon
- Package
- SOT-363
- Pins
- 6
- Details
- 0.2A, 75V, Surface Mount Small Signal Switching Diodes
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99TSOT-416Switching diode, 3 pins, InfineonSwitching diodeSOT-4163 pinsInfineon
- What it is
- Switching diode
- Maker
- Infineon
- Package
- SOT-416
- Pins
- 3
- Details
- 0.5A, 85V, Surface Mount Small Signal Switching Diodes
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99TPTSOT-4163 pins, Chenmko EnterpriseNot recordedSOT-4163 pinsChenmko Enterprise
- What it is
- Not recorded
- Maker
- Chenmko Enterprise
- Package
- SOT-416
- Pins
- 3
- Details
- Diode: Dual, Sw, 85V, 150mA, Vf<1.25V(150mA), 4ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99USOT-3233 pins, ROHMNot recordedSOT-3233 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- SOT-323
- Pins
- 3
- Details
- Si-diode: Dual, U-Speed, 80V, 100mA, Vf<1,2V(100mA), 0,5pF, 4ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99WPTSOT-3233 pins, Chenmko EnterpriseNot recordedSOT-3233 pinsChenmko Enterprise
- What it is
- Not recorded
- Maker
- Chenmko Enterprise
- Package
- SOT-323
- Pins
- 3
- Details
- Diode: Dual, Sw, 85V, 150mA, Vf<1.25V(150mA), 4ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BAV99WT1SOT-323Switching diode, 3 pinsSwitching diodeSOT-3233 pinsNot recorded
- What it is
- Switching diode
- Maker
- Not recorded
- Package
- SOT-323
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
3 more parts have no package on record
74AUP1T57GNNXPNot recordedNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Configurable gate with voltage-level translator
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
74AUP1T57GSNXPNot recordedNot recordedNot recordedNXP
- What it is
- Not recorded
- Maker
- NXP
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Configurable gate with voltage-level translator
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
BD45E271G-MVoltage supervisor, ROHMVoltage supervisorNot recordedNot recordedROHM
- What it is
- Voltage supervisor
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 2.7V±1%, -MR, -Reset ODO, Rdt=100ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
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.
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.
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.
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.
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