SMD code 8A-
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.
81 parts are printed 8A-
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.
MM8Z6V2C-CSOD-882Zener diode, 2 pins, SeCoSZener diodeSOD-8822 pinsSeCoS
- What it is
- Zener diode
- Maker
- SeCoS
- Package
- SOD-882
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MMBZ5226BSOT-23Zener diode, 3 pins, Taitron ComponentsZener diodeSOT-233 pinsTaitron Components
- What it is
- Zener diode
- Maker
- Taitron Components
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MMBZ5226BLSOT-23Zener diode, 3 pins, onsemiZener diodeSOT-233 pinsonsemi
- What it is
- Zener diode
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Zener Voltage Regulators MMBZ52xxBLT1G Series, SZMMBZ52xxBLT1G Series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MUN2211SOT-23Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-233 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
MUN5211SOT-323Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-3233 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
NSVDTC114EM3SOT-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 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
S-LMBZ5226BLT1GSOT-23Zener diode, 3 pins, LRCZener diodeSOT-233 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOT-23
- Pins
- 3
- Details
- Zener diode, VZ Min 3.13 V, VZ Nom 3.3 V, VZ Max 3.47 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-LMUN5211T1GSOT-323Digital transistor (NPN, resistors built in), 3 pins, LRCDigital transistor (NPN, resistors built in)SOT-3233 pinsLRC
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- Details
- Digital transistor (bias resistors built in), NPN, IC 100 mA, VCEO 50 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
S-LMUN5211T1G-SSOT-323Digital transistor (resistors built in), 3 pins, LRCDigital transistor (resistors built in)SOT-3233 pinsLRC
- What it is
- Digital transistor (resistors built in)
- Maker
- LRC
- Package
- SOT-323
- Pins
- 3
- 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.
SDTC114EESOT-416Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-4163 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-416
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
SMUN2211SOT-23Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-233 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
SMUN5211SOT-323Digital transistor (NPN, resistors built in), 3 pins, onsemiDigital transistor (NPN, resistors built in)SOT-3233 pinsonsemi
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- onsemi
- Package
- SOT-323
- Pins
- 3
- Details
- Digital Transistors (BRT) R1 = 10 k , R2 = 10 k
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Digital transistor.
ZD5226BN3SOT-23Zener diode, 3 pins, CYStekZener diodeSOT-233 pinsCYStek
- What it is
- Zener diode
- Maker
- CYStek
- Package
- SOT-23
- Pins
- 3
- Details
- 3.3 V zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
2 more parts have no package on record
MAR-8ASM+RF amplifier (MMIC), Mini-CircuitsRF amplifier (MMIC)Not recordedNot recordedMini-Circuits
- What it is
- RF amplifier (MMIC)
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MMIC amplifier, DC-1 GHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
S-LDTC114EET1GDigital transistor (NPN, resistors built in), LRCDigital transistor (NPN, resistors built in)Not recordedNot recordedLRC
- What it is
- Digital transistor (NPN, resistors built in)
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Digital transistor (bias resistors built in), NPN, IC 100 mA, VCEO 50 V
- 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.
RF amplifier
Voltage, board powered, on the output pin that the bias resistor or choke feeds.
Working, it reads
The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.
Dead, it reads
- Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
- Output pin at the full supply voltage: open inside, no current flowing.
- On the board:
- Measured on the board with power on; the bias network is part of the reading.
- 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 figures depend on the part and its bias resistor. The datasheet gives both.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
Zener diode
Diode range for the forward check, part lifted, red probe on the anode. A bench supply for the Zener voltage.
Working, it reads
About 0.6 to 0.8 V forward and open in reverse on the diode range. Its Zener voltage shows only on a supply: feed it through a resistor that sets about 5 mA, cathode to positive, read quickly, and it should hold near its rated voltage.
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, forward too: failed open.
- Holds well off its rated voltage on the supply test: drifted.
- A soft knee, or a voltage that creeps on the supply test: 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 meter's diode range stops at about 2 to 3 V, so almost every Zener reads open in reverse on it, good or bad; a 3 V meter may just show a 2.4 or 2.7 V part. Above about 3 V the meter cannot tell a Zener from a plain diode.
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.
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