SMD code 01 in SOT-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.
1 part in SOT-523 is printed 01
Not sure which one you have?
Answer up to 4 quick questions and these 40 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.
SGM2037-1.5XUDX6GLDO regulator, 6 pins, SG MicroLDO regulator6 pinsSG Micro
- What it is
- LDO regulator
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 6
- Details
- 1.5 V output, 500mA, Low Noise, Very Low Dropout Bias Rail CMOS Voltage Regulator
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
SGM2045-1.30XGLDO regulator, 4 pins, SG MicroLDO regulator4 pinsSG Micro
- What it is
- LDO regulator
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 4
- Details
- 1.30 V output, 300mA, Low VIN, Ultra-Low Noise and High PSRR Linear Regulator
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
SGM2074-1.05XXED6GLDO regulator, 6 pins, SG MicroLDO regulator6 pinsSG Micro
- What it is
- LDO regulator
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 6
- Details
- 1.05 V output, 500mA, Fast Load Transient Response, 1.2V Logic, Low Dropout, Bias Rail CMOS Voltage Regulator
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
SGM2575SAYGLoad switch, 4 pins, SG MicroLoad switch4 pinsSG Micro
- What it is
- Load switch
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 4
- Details
- 5.5V, 2A, 30mΩ RDSON Load Switch with Reverse Current Protection
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Load switch.
SGM2822TYUVC9GAudio amplifier, 9 pins, SG MicroAudio amplifier9 pinsSG Micro
- What it is
- Audio amplifier
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 9
- Details
- 3.2W Low EMI Class-D Audio Power Amplifier with Auto-Recovering Short-Circuit Protection
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM8188A0XGCurrent sense amplifier, 4 pins, SG MicroCurrent sense amplifier4 pinsSG Micro
- What it is
- Current sense amplifier
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 4
- Details
- Tiny Package, Nano-Power, Precision Current-Sense Amplifier
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM8193A0XGCurrent sense amplifier, 4 pins, SG MicroCurrent sense amplifier4 pinsSG Micro
- What it is
- Current sense amplifier
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 4
- Details
- Tiny Packages, Nano-Power, Precision Current-Sense Amplifier
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM8715-0.5XGComparator, 4 pins, SG MicroComparator4 pinsSG Micro
- What it is
- Comparator
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 4
- Details
- WLCSP Package, Low Power Comparator with Precision Voltage Reference
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM13005H1YUEC6G6 pins, SG MicroNot recorded6 pinsSG Micro
- What it is
- Not recorded
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 6
- Details
- Low Noise Amplifier for LTE High Band
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
SGM21102BGXHB6G6 pins, SG MicroNot recorded6 pinsSG Micro
- What it is
- Not recorded
- Maker
- SG Micro
- Package
- Not recorded
- Pins
- 6
- Details
- 0.3GHz to 6.0GHz SPDT Switch
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: This part.
SM1901PSQGP-channel MOSFET, Sinopower SemiconductorP-channel MOSFETNot recordedSinopower Semiconductor
- What it is
- P-channel MOSFET
- Maker
- Sinopower Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- 20 V, 1 A P-channel MOSFET
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
MTP2301V3P-channel MOSFET, CYStekP-channel MOSFETNot recordedCYStek
- What it is
- P-channel MOSFET
- Maker
- CYStek
- Package
- Not recorded
- Pins
- Not recorded
- Details
- -20 V, -3.4 A P-channel MOSFET
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: P-channel MOSFET.
AP8822C-41GIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
- What it is
- Voltage supervisor
- Maker
- Anwell Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 4.1V±2%, -Reset PPO, 200ms Rt delay, H-free
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
AP8822C-41GSVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
- What it is
- Voltage supervisor
- Maker
- Anwell Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 4.1V±2%, -Reset PPO, 200ms Rt delay, H-free
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
AP8822C-41PIVoltage supervisor, Anwell SemiconductorVoltage supervisorNot recordedAnwell Semiconductor
- What it is
- Voltage supervisor
- Maker
- Anwell Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 4.1V±2%, -Reset PPO, 200ms Rt delay
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
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.
Voltage regulator
Voltage, board powered, black probe on ground. Then ohms with the power off.
Working, it reads
Input pin at the supply, output pin at its rated voltage, and the enable pin high if it has one.
Dead, it reads
- Output equal to the input: the pass element has shorted. Everything after it may have taken the full input.
- Input present, enable high, no output: failed open, or holding itself off into a shorted load. Power off and measure output to ground.
- Power off, input to output near 0 Ω: shorted.
- On the board:
- An output at 0 V is often a shorted load with the regulator in current limit. Lift the output pin: if the short stays on the board, the regulator may be fine.
- Compare:
- The same regulator on another rail or another board shows the right voltages and the right resistances.
- Watch for:
- Makers put input, output and ground on different pins in the same package, so take them from this part's datasheet. Diode or ohms readings between its pins say little; check it powered.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
Load switch
Voltage, board powered, black probe on ground.
Working, it reads
Switched on, the output pin sits at the input voltage. Switched off, it sits near 0 V.
Dead, it reads
- Output at the input voltage while switched off: the pass element has shorted.
- Input present and switched on, no output: failed open, or shut down into a shorted load. Power off and measure output to ground.
- On the board:
- An output near 0 Ω to ground is usually the load. Lift the output pin to see which.
- 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 pinout and whether the enable is active high or low differ between parts. 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.
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.
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.
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.
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