SMD code N- in SOD-523
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.
15 parts in SOD-523 are printed N-
Not sure which one you have?
Answer up to 4 quick questions and these 46 parts are ranked, with a meter test that settles it. It works on a dead part too.
all SOD-523, 2 pins. What differs:
BAR65-02VSOD-523PIN diode, InfineonPIN diodeInfineon
- What it is
- PIN diode
- Maker
- Infineon
- Package
- SOD-523
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PIN diode or varicap.
BB181SOD-523Varicap diode, NXPVaricap diodeNXP
- What it is
- Varicap diode
- Maker
- NXP
- Package
- SOD-523
- Pins
- 2
- Details
- VHF variable capacitance diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PIN diode or varicap.
CH651S-40GPSOD-523Schottky diode, ChenmkoSchottky diodeChenmko
- What it is
- Schottky diode
- Maker
- Chenmko
- Package
- SOD-523
- Pins
- 2
- Details
- SCHOTTKY BARRIER DIODE, 40 V, 0.75 A
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB531S-30SOD-523Schottky diode, Galaxy MicroelectronicsSchottky diodeGalaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-523
- Pins
- 2
- Details
- 0.1A, 30V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB531SM-30SOD-523Schottky diode, ROHMSchottky diodeROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- SOD-523
- Pins
- 2
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB531SM-30FHSOD-523Schottky diode, ROHMSchottky diodeROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- SOD-523
- Pins
- 2
- Details
- Schottky Barrier Diode (AEC-Q101 qualified)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
TRB531S-30SOD-523Schottky diode, Galaxy MicroelectronicsSchottky diodeGalaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-523
- Pins
- 2
- Details
- 0.1A, 30V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
VCUT0714A02VSOD-523ESD protection diode, VishayESD protection diodeVishay
- What it is
- ESD protection diode
- Maker
- Vishay
- Package
- SOD-523
- Pins
- 2
- Details
- Bidirectional Asymmetrical (BiAs) Single Line ESD-Protection Diode in SOD-523
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
BAT15-02VSOD-523Schottky diode, InfineonSchottky diodeInfineon
- What it is
- Schottky diode
- Maker
- Infineon
- Package
- SOD-523
- Pins
- 2
- Details
- Si-diode: Schottky, DBS-mix, 4V, 100mA, <12GHz, <0,35pF
- Source
- Published code list
Is it dead? The meter test is below: Schottky diode.
CH651S-40PTSOD-523Chenmko EnterpriseNot recordedChenmko Enterprise
- What it is
- Not recorded
- Maker
- Chenmko Enterprise
- Package
- SOD-523
- Pins
- 2
- Details
- Diode: SBD, 40V, 750mA, Vf<0.7V(750mA)
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
MA2S357SOD-523PanasonicNot recordedPanasonic
- What it is
- Not recorded
- Maker
- Panasonic
- Package
- SOD-523
- Pins
- 2
- Details
- Capacitance diode: CATV, 34V, 58/3.5pF(0/17V), 0.54(470MHz)
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
MAZS047SOD-523PanNot recordedPan
- What it is
- Not recorded
- Maker
- Pan
- Package
- SOD-523
- Pins
- 2
- Details
- Z-diode: 4,4..5V, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
MAZS0470LSOD-523PanNot recordedPan
- What it is
- Not recorded
- Maker
- Pan
- Package
- SOD-523
- Pins
- 2
- Details
- Z-diode: 4,45..4,69V, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
MMSZ5234BPTSOD-523Zener diode, Chenmko EnterpriseZener diodeChenmko Enterprise
- What it is
- Zener diode
- Maker
- Chenmko Enterprise
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode: 6.2V±5%, Izt=20mA, Zzt=7, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
MMSZ5263BPTSOD-523Zener diode, Chenmko EnterpriseZener diodeChenmko Enterprise
- What it is
- Zener diode
- Maker
- Chenmko Enterprise
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode: 56V±5%, Izt=2.2mA, Zzt=150, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener 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.
PIN diode or varicap
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.6 to 0.9 V anode to cathode, 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.
- 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 varicap that has drifted in capacitance reads normal on a meter. Only a capacitance meter or the tuning itself shows it.
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.
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.
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.
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.
Printed with a code easy to misread as N-
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
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