SMD code 24 in DFN
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.
7 parts in DFN are printed 24
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.
15 parts have no package on record. Nothing rules them out, so they stay.
SSU24SSchottky diode, YFWSchottky diodeNot recordedYFW
- What it is
- Schottky diode
- Maker
- YFW
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
USFZ24VZener diode, KECZener diodeNot recordedKEC
- What it is
- Zener diode
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
02DZ2.4XZener diode, ToshibaZener diodeNot recordedToshiba
- What it is
- Zener diode
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.28..2.50V, Iz=5mA, Zz=100, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
02DZ2.4ZZener diode, ToshibaZener diodeNot recordedToshiba
- What it is
- Zener diode
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 2.40..2.60V, Iz=5mA, Zz=100, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
2SC50063 pins, California Eastern LaboratoriesNot recorded3 pinsCalifornia Eastern Laboratories
- What it is
- Not recorded
- Maker
- California Eastern Laboratories
- Package
- Not recorded
- Pins
- 3
- Details
- npn RF fT 4.5GHz @3V 7mA
- Source
- Published code list
Is it dead? The meter test is below: This part.
BZY55-C24Zener diode, Taiwan SemiconductorZener diodeNot recordedTaiwan Semiconductor
- What it is
- Zener diode
- Maker
- Taiwan Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Izt=5mA, Zzt=80, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C24Zener diode, Crownpo TechnologyZener diodeNot recordedCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Zzt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C24SZener diode, Crownpo TechnologyZener diodeNot recordedCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Zzt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C24TZener diode, Crownpo TechnologyZener diodeNot recordedCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Zzt=80, Izt=5mA, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CMZ24Zener diode, ToshibaZener diodeNot recordedToshiba
- What it is
- Zener diode
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Z-diode: 24V±5%, 2W
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CTZ55C24Zener diode, Compact TechnologyZener diodeNot recordedCompact Technology
- What it is
- Zener diode
- Maker
- Compact Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Izt=5mA, Zzt=80, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRNC55C24-GZener diode, ComchipZener diodeNot recordedComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Zt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRSC55C24-GZener diode, ComchipZener diodeNot recordedComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 22.80..25.20V, Zt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
DTC114EROHMNot recordedNot recordedROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Published code list
Is it dead? The meter test is below: This part.
DTC114EB3 pins, ROHMNot recorded3 pinsROHM
- What it is
- Not recorded
- Maker
- ROHM
- Package
- Not recorded
- Pins
- 3
- Source
- Published code list
Is it dead? The meter test is below: This part.
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.
This part
Diode range and ohms range, part lifted.
Working, it reads
Depends on what it is. The datasheet, or an identical part, says.
Dead, it reads
- Between two pins, the same reading both ways, near 0 V with a continuous beep: shorted.
- Open between every pair of pins: failed open, or a part that reads open when working.
- 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.
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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