SMD code 33 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.
7 parts in SOD-523 are printed 33
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.
SAV-331+RF amplifier (MMIC), Mini-CircuitsRF amplifier (MMIC)Mini-Circuits
- What it is
- RF amplifier (MMIC)
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MMIC amplifier, 10-4000 MHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
TAV1-331+RF amplifier (MMIC), Mini-CircuitsRF amplifier (MMIC)Mini-Circuits
- What it is
- RF amplifier (MMIC)
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MMIC amplifier, 10-4000 MHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
USFZ33VZener diode, KECZener diodeKEC
- 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.
VSKY023063Schottky diode, VishaySchottky diodeVishay
- What it is
- Schottky diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Small Signal Schottky Diode FlipKY Gen 3
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
02DZ3.3XZener diode, ToshibaZener diodeToshiba
- What it is
- Zener diode
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 3.10..3.35V, Iz=5mA, Zz=130, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
02DZ3.3ZZener diode, ToshibaZener diodeToshiba
- What it is
- Zener diode
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 3.25..3.50V, Iz=5mA, Zz=130, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
BZY55-C33Zener diode, Taiwan SemiconductorZener diodeTaiwan Semiconductor
- What it is
- Zener diode
- Maker
- Taiwan Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Izt=5mA, Zzt=80, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C33Zener diode, Crownpo TechnologyZener diodeCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Zzt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C33SZener diode, Crownpo TechnologyZener diodeCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Zzt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CDZ55C33TZener diode, Crownpo TechnologyZener diodeCrownpo Technology
- What it is
- Zener diode
- Maker
- Crownpo Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Zzt=80, Izt=5mA, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CTZ55C33Zener diode, Compact TechnologyZener diodeCompact Technology
- What it is
- Zener diode
- Maker
- Compact Technology
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Izt=5mA, Zzt=80, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRNC55C33-GZener diode, ComchipZener diodeComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Zt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
CZRSC55C33-GZener diode, ComchipZener diodeComchip
- What it is
- Zener diode
- Maker
- Comchip
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.35..34.65V, Zt=80, Izt=5mA, 500mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
KDZ33VVZener diode, KECZener diodeKEC
- What it is
- Zener diode
- Maker
- KEC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 31.0..35.0V, Izt=2mA, Zzt=250, 100mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
LZ52C33WZener diode, Lite-On SemiconductorZener diodeLite-On Semiconductor
- What it is
- Zener diode
- Maker
- Lite-On Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Zener diode: 32.34..33.66V, Izt=5mA, Zzt=80, 500mW
- 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.
RF amplifier
Voltage, board powered, on the output pin that the bias resistor or choke feeds.
Working, it reads
The output pin sits at the device voltage the datasheet gives, a few volts, below the supply.
Dead, it reads
- Output pin at 0 V, or near 0 Ω to ground with the power off: shorted inside.
- Output pin at the full supply voltage: open inside, no current flowing.
- On the board:
- Measured on the board with power on; the bias network is part of the reading.
- Compare:
- If an identical part sits elsewhere on the board, measure it the same way: that is what this one should read.
- Watch for:
- The figures depend on the part and its bias resistor. The datasheet gives both.
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.
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.
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