SMD code 5-
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.
171 parts are printed 5-
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.
RB751L-40SOD-882Schottky diode, Galaxy MicroelectronicsSchottky diodeSOD-882Galaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-882
- Pins
- 2
- Details
- 0.03A, 40V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751LP3-40DFN0603-2Schottky diode, Galaxy MicroelectronicsSchottky diodeDFN0603-2Galaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- DFN0603-2
- Pins
- 2
- Details
- 0.03A, 41V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751S-30SOD-523Schottky diode, HottechSchottky diodeSOD-523Hottech
- What it is
- Schottky diode
- Maker
- Hottech
- Package
- SOD-523
- Pins
- 2
- Details
- Schottky diode, 30 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751S-40SOD-523Schottky diode, Galaxy MicroelectronicsSchottky diodeSOD-523Galaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-523
- Pins
- 2
- Details
- 0.03A, 40V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751SM-40SOD-523Schottky diode, ROHMSchottky diodeSOD-523ROHM
- 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.
RB751SM-40FHSOD-523Schottky diode, ROHMSchottky diodeSOD-523ROHM
- 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.
RB751V-40SOD-323Schottky diode, Galaxy MicroelectronicsSchottky diodeSOD-323Galaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-323
- Pins
- 2
- Details
- 0.03A, 40V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751V-40-HFSOD-323Schottky diode, ComchipSchottky diodeSOD-323Comchip
- What it is
- Schottky diode
- Maker
- Comchip
- Package
- SOD-323
- Pins
- 2
- Details
- 40 V, 0.03 A Schottky barrier diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751VM-40SOD-323Schottky diode, ROHMSchottky diodeSOD-323ROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- SOD-323
- Pins
- 2
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751VM-40FHSOD-323Schottky diode, ROHMSchottky diodeSOD-323ROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- SOD-323
- Pins
- 2
- Details
- Schottky Barrier Diode (AEC-Q101 qualified)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751W-40SOD-123Schottky diode, Galaxy MicroelectronicsSchottky diodeSOD-123Galaxy Microelectronics
- What it is
- Schottky diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-123
- Pins
- 2
- Details
- 0.03A, 40V, Surface Mount Small Signal Schottky Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
S-LBZT52B10T1GSOD-123Zener diode, LRCZener diodeSOD-123LRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-123
- Pins
- 2
- Details
- Zener diode, VZ Min 9.77 V, VZ Nom 10 V, VZ Max 10.21 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-LEDZ10BT1GSOD-523Zener diode, LRCZener diodeSOD-523LRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode, VZ Min 9.77 V, VZ Nom 10 V, VZ Max 10.21 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
2 more parts have no package on record
RB751M5-40Schottky diode, Taiwan SemiconductorSchottky diodeNot recordedTaiwan Semiconductor
- What it is
- Schottky diode
- Maker
- Taiwan Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RB751SSchottky diode, Formosa MicrosemiSchottky diodeNot recordedFormosa Microsemi
- What it is
- Schottky diode
- Maker
- Formosa Microsemi
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
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.
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.
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