SMD code JAs
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 JA was searched.
77 parts are printed JAs
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.
BAT43HGPSOD-323Schottky diode, 2 pins, ChenmkoSchottky diodeSOD-3232 pinsChenmko
- What it is
- Schottky diode
- Maker
- Chenmko
- Package
- SOD-323
- Pins
- 2
- Details
- SCHOTTKY BARRIER DIODE, 30 V, 0.2 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
BAV70SOT-23Switching diode, 3 pins, Taitron ComponentsSwitching diodeSOT-233 pinsTaitron Components
- What it is
- Switching diode
- Maker
- Taitron Components
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70-AUSOT-23Switching diode, 3 pins, PanjitSwitching diodeSOT-233 pinsPanjit
- What it is
- Switching diode
- Maker
- Panjit
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70DWSOT-363Switching diode, 6 pins, PanjitSwitching diodeSOT-3636 pinsPanjit
- What it is
- Switching diode
- Maker
- Panjit
- Package
- SOT-363
- Pins
- 6
- Details
- SMD Small Signal Diode Arrays
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70DW-AUSOT-363Switching diode, 6 pins, PanjitSwitching diodeSOT-3636 pinsPanjit
- What it is
- Switching diode
- Maker
- Panjit
- Package
- SOT-363
- Pins
- 6
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70WSOT-323Switching diode, 3 pins, PanjitSwitching diodeSOT-3233 pinsPanjit
- What it is
- Switching diode
- Maker
- Panjit
- Package
- SOT-323
- Pins
- 3
- Details
- SMD Small Signal Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV74SOT-23Switching diode, 3 pins, Taitron ComponentsSwitching diodeSOT-233 pinsTaitron Components
- What it is
- Switching diode
- Maker
- Taitron Components
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV74-P2-HFSOT-23Switching diode, 3 pins, ComchipSwitching diodeSOT-233 pinsComchip
- What it is
- Switching diode
- Maker
- Comchip
- Package
- SOT-23
- Pins
- 3
- Details
- 50 V, 200 mA switching diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV74,215SOT-23Switching diode, 3 pins, HXYSwitching diodeSOT-233 pinsHXY
- What it is
- Switching diode
- Maker
- HXY
- Package
- SOT-23
- Pins
- 3
- Details
- Switching diode, 50 V, 0.2 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV74LSOT-23Switching diode, 3 pins, onsemiSwitching diodeSOT-233 pinsonsemi
- What it is
- Switching diode
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Monolithic Dual Switching Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
KDS135SOD-323Switching diode, 2 pins, KECSwitching diodeSOD-3232 pinsKEC
- What it is
- Switching diode
- Maker
- KEC
- Package
- SOD-323
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
KDS135SSOT-23Switching diode, 3 pins, KECSwitching diodeSOT-233 pinsKEC
- What it is
- Switching diode
- Maker
- KEC
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
3 more parts have no package on record
BAS21-135Switching diode, Taitron ComponentsSwitching diodeNot recordedNot recordedTaitron Components
- What it is
- Switching diode
- Maker
- Taitron Components
- Package
- Not recorded
- Pins
- Not recorded
- Details
- SMD Switching Diodes (Three Terminals)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70LSwitching diode, VishaySwitching diodeNot recordedNot recordedVishay
- What it is
- Switching diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Small Signal Fast Switching Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Silicon diode.
BAV70WSSwitching diode, Taitron ComponentsSwitching diodeNot recordedNot recordedTaitron Components
- What it is
- Switching diode
- Maker
- Taitron Components
- Package
- Not recorded
- Pins
- Not recorded
- Details
- SMD Switching Diodes (Three Terminals)
- Source
- Manufacturer datasheet
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.
Schottky diode
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.15 to 0.45 V anode to cathode, roughly half a silicon diode, and open the other way.
Dead, it reads
- The same reading both ways round, near 0 V with a continuous beep or the same middling value: shorted.
- A reading the wrong way round as well: leaky.
- Open both ways: failed open.
- 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 large Schottky can read about 0.1 V forward and beep like a short, and leaks a little the wrong way when good, more when warm. It is shorted only if it reads the same both ways. Measure it cold, beside an identical cold one.
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 JAs
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes that begin with JAs
For a marking with its end worn or burnt off. Each code has a page of its own.
- JAF2
- JAA4
- JAC2
- JAD2
- JAG4
- JAH10
- JAE2
- JA11
- JASF1
- JAAA2
- JA123
- JA133
- JA143
- JA153
- JA163
- JA173
- JA183
- JA193
- JA203
- JA213
- JA223
- JA233
- JA243
- JA253
- JA263
- JA273
- JA283
- JA293
- JA303
- JA313
- JA323
- JA333
- JA343
- JA353
- JA363
- JA373
- JA383
- JA393
- JA403
- JA413
- JA423
- JA433
- JA443
Codes not listed here are printed on 178 more parts.
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