SMD code LJp
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 LJ was searched.
47 parts are printed LJp
Not sure which one you have?
Answer up to 4 quick questions and these 47 parts are ranked, with a meter test that settles it. It works on a dead part too.
2 pins. What differs:
SDM10U45LPSOD-882Diodes IncorporatedNot recordedSOD-882Diodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOD-882
- Pins
- 2
- Details
- Si-diode: Schottky, 45V, 100mA, Vf<800mV(100mA)
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
SK415CSMCSchottky diode, Fagor ElectronicaSchottky diodeSMCFagor Electronica
- What it is
- Schottky diode
- Maker
- Fagor Electronica
- Package
- SMC
- Pins
- 2
- Details
- Diode: SBR, 150V, 4A, Vf<0.9V(4A)
- Source
- Published code list
Is it dead? The meter test is below: Schottky 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.
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.
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