SMD code Y17
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.
25 parts are printed Y17
Not sure which one you have?
Answer up to 4 quick questions and these 25 parts are ranked, with a meter test that settles it. It works on a dead part too.
ACZRH584C51-HFSOD-523Zener diode, 2 pins, ComchipZener diodeSOD-5232 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SOD-523
- Pins
- 2
- Details
- 51 V 0.2 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX84C51SOT-23Zener diode, 3 pins, Taitron ComponentsZener diodeSOT-233 pinsTaitron Components
- What it is
- Zener diode
- Maker
- Taitron Components
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX84C51-MSSOT-23Zener diode, 3 pins, MSKSEMIZener diodeSOT-233 pinsMSKSEMI
- What it is
- Zener diode
- Maker
- MSKSEMI
- Package
- SOT-23
- Pins
- 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX84C51LSOT-23Zener diode, 3 pins, onsemiZener diodeSOT-233 pinsonsemi
- What it is
- Zener diode
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Zener Voltage Regulators BZX84BxxxLT1G, BZX84CxxxLT1G Series, SZBZX84BxxxLT1G, SZBZX84CxxxLT1G Series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
BZX584C51SOD-523Zener diode, 2 pins, Galaxy MicroelectronicsZener diodeSOD-5232 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-523
- Pins
- 2
- Details
- 51V, 150mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
CZRH584C51-HFSOD-523Zener diode, 2 pins, ComchipZener diodeSOD-5232 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SOD-523
- Pins
- 2
- Details
- 51 V 0.2 mW zener diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
LBZX84C51LT1GSOT-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 48 V, VZ Nom 51 V, VZ Max 54 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-LBZX84C51LT1GSOT-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 48 V, VZ Nom 51 V, VZ Max 54 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TBZX84C51SOT-23Zener diode, 3 pins, Galaxy MicroelectronicsZener diodeSOT-233 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOT-23
- Pins
- 3
- Details
- 51V, 350mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
TBZX584C51SOD-523Zener diode, 2 pins, Galaxy MicroelectronicsZener diodeSOD-5232 pinsGalaxy Microelectronics
- What it is
- Zener diode
- Maker
- Galaxy Microelectronics
- Package
- SOD-523
- Pins
- 2
- Details
- 51V, 150mW, Surface Mount Zener Diodes
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
ACZRT55C51-GSOT-23Zener diode, 3 pins, ComchipZener diodeSOT-233 pinsComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- SOT-23
- Pins
- 3
- Details
- Zener diode: 48.0..54.0V, Izt=2.0mA, Zzt=180, 350mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
BZX84-C51SOT-23Zener diode, 3 pins, NXPZener diodeSOT-233 pinsNXP
- What it is
- Zener diode
- Maker
- NXP
- Package
- SOT-23
- Pins
- 3
- Details
- 51 V approx. ±5% voltage regulator (Zener) diode
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
BZX84-C51-VSOT-233 pins, Diodes IncorporatedNot recordedSOT-233 pinsDiodes Incorporated
- What it is
- Not recorded
- Maker
- Diodes Incorporated
- Package
- SOT-23
- Pins
- 3
- Details
- Z-diode: 51V±5%, Zzt=60Ω(180mA), 300mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
BZX84C51LT1SOT-23Zener diode, 3 pins, onsemiZener diodeSOT-233 pinsonsemi
- What it is
- Zener diode
- Maker
- onsemi
- Package
- SOT-23
- Pins
- 3
- Details
- Zener diode: 48..54V, Zzt=180, Izt=5mA, 225mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
1 more part has no package on record
BZX84C51-VZener diode, VishayZener diodeNot recordedNot recordedVishay
- What it is
- Zener diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- 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.
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.
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.
Printed with a code easy to misread as Y17
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 Y17
For a marking with its end worn or burnt off. Each code has a page of its own.
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