SMD code 3LS
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.
15 parts are printed 3LS
Not sure which one you have?
Answer up to 4 quick questions and these 15 parts are ranked, with a meter test that settles it. It works on a dead part too.
2SK608-SSOT-233 pins, PanasonicNot recordedSOT-233 pinsPanasonic
- What it is
- Not recorded
- Maker
- Panasonic
- Package
- SOT-23
- Pins
- 3
- Details
- FET n-type: FM-Tun, 30V, 20mA, 20mW, Idss=14..20mA, Up<3V
- Source
- Published code list
Is it dead? The meter test is below: MOSFET.
AP6203L-42GASOT-23-5LDO regulator, 5 pins, Anwell SemiconductorLDO regulatorSOT-23-55 pinsAnwell Semiconductor
- What it is
- LDO regulator
- Maker
- Anwell Semiconductor
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE, CL, H-free
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
AP6203L-42PASOT-23-5LDO regulator, 5 pins, Anwell SemiconductorLDO regulatorSOT-23-55 pinsAnwell Semiconductor
- What it is
- LDO regulator
- Maker
- Anwell Semiconductor
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
BC858CSOT-23PNP transistor, 3 pins, InfineonPNP transistorSOT-233 pinsInfineon
- What it is
- PNP transistor
- Maker
- Infineon
- Package
- SOT-23
- Pins
- 3
- Details
- -30 V PNP small-signal transistor, gain group C
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
BC858CWSOT-323Transistor, 3 pins, SiemensTransistorSOT-3233 pinsSiemens
- What it is
- Transistor
- Maker
- Siemens
- Package
- SOT-323
- Pins
- 3
- Details
- SMD General Purpose PNP Transistors
- Source
- Published code list
Is it dead? The meter test is below: Bipolar transistor.
BCV62CSOT-143Dual PNP transistor, 4 pins, InfineonDual PNP transistorSOT-1434 pinsInfineon
- What it is
- Dual PNP transistor
- Maker
- Infineon
- Package
- SOT-143
- Pins
- 4
- Details
- 30V, 0.1A, General Purpose PNP Bipolar Transistor
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor pair.
EC49513L-42B2SOT-23-5LDO regulator, 5 pins, E-CMOSLDO regulatorSOT-23-55 pinsE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EC49513L-42B2GSOT-23-5LDO regulator, 5 pins, E-CMOSLDO regulatorSOT-23-55 pinsE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL, H-free
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EC49513L-42FDFNLDO regulator, E-CMOSLDO regulatorDFNNot recordedE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- DFN
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EC49513L-42FGDFNLDO regulator, E-CMOSLDO regulatorDFNNot recordedE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- DFN
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL, H-free
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
XC6104D524MRSOT-23-5Voltage supervisor, 5 pins, TorexVoltage supervisorSOT-23-55 pinsTorex
- What it is
- Voltage supervisor
- Maker
- Torex
- Package
- SOT-23-5
- Pins
- 5
- Details
- CMOS-IC: VDet 2.4V, 5%, Hst, ±Reset PPO, Wt=400ms, Rt=100ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
4 more parts have no package on record
AP6203L-42GULDO regulator, Anwell SemiconductorLDO regulatorNot recordedNot recordedAnwell Semiconductor
- What it is
- LDO regulator
- Maker
- Anwell Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE, CL, H-free
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
AP6203L-42PULDO regulator, Anwell SemiconductorLDO regulatorNot recordedNot recordedAnwell Semiconductor
- What it is
- LDO regulator
- Maker
- Anwell Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EC49513L-42T2LDO regulator, E-CMOSLDO regulatorNot recordedNot recordedE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
EC49513L-42T2GLDO regulator, E-CMOSLDO regulatorNot recordedNot recordedE-CMOS
- What it is
- LDO regulator
- Maker
- E-CMOS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 4.2V±50mV, 300mA, +CE, CL, H-free
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
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.
MOSFET
Diode range, part lifted. Test drain to source first, then short gate to source and test again.
Working, it reads
One way between drain and source reads about 0.4 to 0.9 V, the body diode, and the other way open. The gate reads open to both other pins.
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.
- No body diode at all: failed open.
- On the board
- the gate usually has a resistor to the source, which reads as that resistor and 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.
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.
PNP transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
Black probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
Bipolar transistor
Diode range, part lifted or its base leg off the pad.
Working, it reads
From the base, one probe colour reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
PNP transistor pair
Diode range, part lifted. Test each transistor on its own pins, as the datasheet's pinout gives them.
Working, it reads
Black probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round. Collector to emitter reads open both ways.
Dead, it reads
- Collector to emitter the same both ways, near 0 V with a continuous beep: shorted. The commonest failure.
- The base the same both ways to another pin, near 0 V or a middling value: a shorted junction.
- Only one junction reads, or none: a junction has failed open. It then looks like a diode.
- A reading the wrong way round, where it should be open: 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 pair of diodes with a common pin reads just like a transistor, and some transistors carry a built-in diode or resistor. The datasheet says which.
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.
Printed with a code easy to misread as 3LS
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 3LS
For a marking with its end worn or burnt off. Each code has a page of its own.
Codes not listed here are printed on 36 more parts.
Did you find your part?
Open this in the search to correct a character or try another package.