SMD code Z56
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.
24 parts are printed Z56
Not sure which one you have?
Answer up to 4 quick questions and these 24 parts are ranked, with a meter test that settles it. It works on a dead part too.
ACZRA4758-HFSMAFZener diode, 2 pins, ComchipZener diodeSMAF2 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SMAF
- Pins
- 2
- Details
- 56 V 1 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX84B4V3SOT-23Zener diode, 3 pins, Galaxy MicroelectronicsZener diodeSOT-233 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX84B4V3-HFSOT-23Zener diode, 3 pins, ComchipZener diodeSOT-233 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SOT-23
- Pins
- 3
- Details
- 4.3 V 0.35 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
CZRA4758-HFSMAFZener diode, 2 pins, ComchipZener diodeSMAF2 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SMAF
- Pins
- 2
- Details
- 56 V 1 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
LSTZ5.6NLT1GSOT-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 5.31 V, VZ Nom 5.6 V, VZ Max 5.92 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-LSTZ5.6NLT1GSOT-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 5.31 V, VZ Nom 5.6 V, VZ Max 5.92 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-SODZ56A-SHSOD-123FZener diode, 2 pins, LRCZener diodeSOD-123F2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-123F
- Pins
- 2
- Details
- Zener diode, VZ Min 53.2 V, VZ Nom 56 V, VZ Max 58.8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-SZAF56ASMAFZener diode, 2 pins, LRCZener diodeSMAF2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SMAF
- Pins
- 2
- Details
- Zener diode, VZ Min 53.2 V, VZ Nom 56 V, VZ Max 58.8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
SODZ56A-SHSOD-123FZener diode, 2 pins, LRCZener diodeSOD-123F2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-123F
- Pins
- 2
- Details
- Zener diode, VZ Min 53.2 V, VZ Nom 56 V, VZ Max 58.8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
STPS0560ZSOD-123Schottky diode, 2 pins, STMicroelectronicsSchottky diodeSOD-1232 pinsSTMicroelectronics
- What it is
- Schottky diode
- Maker
- STMicroelectronics
- Package
- SOD-123
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
SZAF56ASMAFZener diode, 2 pins, LRCZener diodeSMAF2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SMAF
- Pins
- 2
- Details
- Zener diode, VZ Min 53.2 V, VZ Nom 56 V, VZ Max 58.8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TBZX84B4V3SOT-23Zener diode, 3 pins, Galaxy MicroelectronicsZener diodeSOT-233 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- 4.3V, 350mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TLZJ56SOD-80Zener diode, 2 pins, Taitron ComponentsZener diodeSOD-802 pinsTaitron Components
- What it is
- Zener diode
- Maker
- Taitron Components
- Package
- SOD-80
- Pins
- 2
- Details
- SMD Zener Diodes (Leadless ) - 500mW
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
ZS4758ASMAZener diode, 2 pins, Formosa MicrosemiZener diodeSMA2 pinsFormosa Microsemi
- What it is
- Zener diode
- Maker
- Formosa Microsemi
- Package
- SMA
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
ZS4758A-Q1SMAZener diode, 2 pins, Formosa MicrosemiZener diodeSMA2 pinsFormosa Microsemi
- What it is
- Zener diode
- Maker
- Formosa Microsemi
- Package
- SMA
- Pins
- 2
- Source
- Manufacturer datasheet
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.
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.
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 Z56
One character differs, and it is one that is easy to confuse under a lamp. Each code has a page of its own.
Codes not listed here are printed on 19 more parts.
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