SMD code A7p in SOT-23
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 A7 was searched.
44 parts in SOT-23 are printed A7p
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.
all SOT-23, 3 pins. What differs:
CH204KGPSOT-23Switching diode, ChenmkoSwitching diodeChenmko
- What it is
- Switching diode
- Maker
- Chenmko
- Package
- SOT-23
- Pins
- 3
- Details
- SWITCHING DIODE, 20 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
CHN217GPSOT-23Switching diode, ChenmkoSwitching diodeChenmko
- What it is
- Switching diode
- Maker
- Chenmko
- Package
- SOT-23
- Pins
- 3
- Details
- SWITCHING DIODE, 80 V, 0.1 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
CMBD7000N3SOT-23Switching diode, CYStekSwitching diodeCYStek
- What it is
- Switching diode
- Maker
- CYStek
- Package
- SOT-23
- Pins
- 3
- Details
- 110 V switching diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
LBAV99LT1GSOT-23Switching diode, LRCSwitching diodeLRC
- What it is
- Switching diode
- Maker
- LRC
- Package
- SOT-23
- Pins
- 3
- Details
- Switching diode, VR 100 V, IF 215 mA, VF Max 1.25 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
LBAV99LT3GSOT-23ESD protection diode, LeiditechESD protection diodeLeiditech
- What it is
- ESD protection diode
- Maker
- Leiditech
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
MMBD4148SESOT-23Switching diode, Taiwan SemiconductorSwitching diodeTaiwan Semiconductor
- What it is
- Switching diode
- Maker
- Taiwan Semiconductor
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
S-LBAV99LT1GSOT-23Switching diode, LRCSwitching diodeLRC
- What it is
- Switching diode
- Maker
- LRC
- Package
- SOT-23
- Pins
- 3
- Details
- Switching diode, VR 100 V, IF 215 mA, VF Max 1.25 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
S-LBAV99LT1G-SSOT-23Switching diode, LRCSwitching diodeLRC
- What it is
- Switching diode
- Maker
- LRC
- Package
- SOT-23
- Pins
- 3
- Details
- Switching diode, VR 100 V, IF 215 mA, VF Max 1.25 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
SBAV99LSOT-23Switching diode, onsemiSwitching diodeonsemi
- What it is
- Switching diode
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Dual Series Switching Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
SCS226KSOT-23Switching diode, SeCoSSwitching diodeSeCoS
- What it is
- Switching diode
- Maker
- SeCoS
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
TBAV99SOT-23Switching diode, Galaxy MicroelectronicsSwitching diodeGalaxy Microelectronics
- What it is
- Switching diode
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- 0.215A, 100V, Surface Mount Small Signal Switching Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV99N3SOT-23Switching diode, CYStekSwitching diodeCYStek
- What it is
- Switching diode
- Maker
- CYStek
- Package
- SOT-23
- Pins
- 3
- Details
- 110 V switching diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
DAN217SOT-23Switching diode, YFWSwitching diodeYFW
- What it is
- Switching diode
- Maker
- YFW
- Package
- SOT-23
- Pins
- 3
- Details
- 0.1A, 80V, Surface Mount Small Signal Switching Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
MMBD7000SOT-23Switching diode, YFWSwitching diodeYFW
- What it is
- Switching diode
- Maker
- YFW
- Package
- SOT-23
- Pins
- 3
- Details
- 0.2A, 100V, Surface Mount Small Signal Switching Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
1SS123SOT-23NEC ElectronicsNot recordedNEC Electronics
- What it is
- Not recorded
- Maker
- NEC Electronics
- Package
- SOT-23
- Pins
- 3
- Details
- Si-diode: Dual, Sw, Fast, 70V, 100mA, Vf<1,3V(100mA), <9ns
- Source
- Published code list
Is it dead? The meter test is below: Silicon 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.
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.
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