SMD code 01 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 01
Not sure which one you have?
Answer up to 4 quick questions and these 46 parts are ranked, with a meter test that settles it. It works on a dead part too.
LM5Z2V7PT1GSOD-523Zener diode, 2 pins, LRCZener diode2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode, VZ Min 2.5 V, VZ Nom 2.7 V, VZ Max 2.9 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
LM5Z2V7T1GSOD-523Zener diode, 2 pins, LeiditechZener diode2 pinsLeiditech
- What it is
- Zener diode
- Maker
- Leiditech
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode, VZ Min 2.5 V, VZ Nom 2.7 V, VZ Max 2.9 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MM5Z2V7SOD-523Zener diode, 2 pins, HXYZener diode2 pinsHXY
- What it is
- Zener diode
- Maker
- HXY
- Package
- SOD-523
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
MM5Z2V7-CSOD-523Zener diode, 2 pins, SeCoSZener diode2 pinsSeCoS
- What it is
- Zener diode
- Maker
- SeCoS
- Package
- SOD-523
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
S-LM5Z2V7PT1GSOD-523Zener diode, 2 pins, LRCZener diode2 pinsLRC
- What it is
- Zener diode
- Maker
- LRC
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode, VZ Min 2.5 V, VZ Nom 2.7 V, VZ Max 2.9 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
GSMM5Z2V7SOD-523Zener diode, 2 pins, Good-ArkZener diode2 pinsGood-Ark
- What it is
- Zener diode
- Maker
- Good-Ark
- Package
- SOD-523
- Pins
- 2
- Details
- Zener diode: 2.5..2.9V, Izt=5mA, Zzt=100, 200mW
- Source
- Published code list
Is it dead? The meter test is below: Zener diode.
MM5Z2V7(T1)SOD-5232 pins, WtrNot recorded2 pinsWtr
- What it is
- Not recorded
- Maker
- Wtr
- Package
- SOD-523
- Pins
- 2
- Details
- Z-diode: 2.5..2.9V, 5mA, Zzt=100Ω, 100mW
- Source
- Published code list
Is it dead? The meter test is below: Silicon diode.
8 more parts have no package on record. Nothing rules them out, so they stay.
74AUP1G74XXDO8GFlip-flop, 8 pins, SG MicroFlip-flop8 pinsSG Micro
- What it is
- Flip-flop
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 8
- Details
- Low Power Single D-Type Positive Flip-Flop with Clear and Preset
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
LP2301LT1GP-channel MOSFET, LRCP-channel MOSFETNot recordedLRC
- What it is
- P-channel MOSFET
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MOSFET, P-Channel, VDSS 20 V, VGS 8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
MAR-1+RF amplifier (MMIC), Mini-CircuitsRF amplifier (MMIC)Not recordedMini-Circuits
- What it is
- RF amplifier (MMIC)
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MMIC amplifier, DC-1 GHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
MAR-1SM+RF amplifier (MMIC), Mini-CircuitsRF amplifier (MMIC)Not recordedMini-Circuits
- What it is
- RF amplifier (MMIC)
- Maker
- Mini-Circuits
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MMIC amplifier, DC-1 GHz
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: RF amplifier.
MM5Z2V7-Q1Zener diode, Formosa MicrosemiZener diodeNot recordedFormosa Microsemi
- What it is
- Zener diode
- Maker
- Formosa Microsemi
- Package
- Not recorded
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Zener diode.
RBR5L60ASchottky diode, ROHMSchottky diodeNot recordedROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Schottky Barrier Diode
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
RBR5L60ADDSchottky diode, ROHMSchottky diodeNot recordedROHM
- What it is
- Schottky diode
- Maker
- ROHM
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Schottky Barrier Diode (AEC-Q101 qualified)
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
S-LP2301LT1GP-channel MOSFET, LRCP-channel MOSFETNot recordedLRC
- What it is
- P-channel MOSFET
- Maker
- LRC
- Package
- Not recorded
- Pins
- Not recorded
- Details
- MOSFET, P-Channel, VDSS 20 V, VGS 8 V
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
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.
Integrated circuit
Voltage with the board powered; ohms from each pin to ground with it off.
Working, it reads
Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.
Dead, it reads
- A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
- Supply present, output stuck: failed, or its load has.
- On the board:
- A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
- Compare:
- The surest reference is the same IC on a working board, measured pin by pin.
- Watch for:
- Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
P-channel MOSFET
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
Red probe on the drain, black on the source: about 0.4 to 0.9 V, the body diode. Open the other way. The gate reads open to both other pins, both ways.
Dead, it reads
- Drain to source the same both ways, near 0 V with a continuous beep, and still so after shorting gate to source: shorted. The classic failure.
- The gate reads low to source or drain: gate shorted. Often all three pins end up shorted together.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, so gate to source reads that resistor, which is not a fault. Lift a leg to be sure.
- 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 diode range can charge the gate enough to turn the part on, and then drain to source reads near 0 both ways on a good part. Short gate to source and test again before you condemn it.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
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.
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 01
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 101 more parts.
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