SMD code L-
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.
136 parts are printed L-
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.
SMV1763-040LFSOD-882Varicap diode, 2 pins, SkyworksVaricap diodeSOD-8822 pinsSkyworks
- What it is
- Varicap diode
- Maker
- Skyworks
- Package
- SOD-882
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: PIN diode or varicap.
SY205205ANCSOD-523ESD protection diode, 2 pins, SilergyESD protection diodeSOD-5232 pinsSilergy
- What it is
- ESD protection diode
- Maker
- Silergy
- Package
- SOD-523
- Pins
- 2
- Details
- Low Capacitance TVS Protection SY205205 Rev.1.0A 1 © 2023 Silergy Corp All Rights Reserved General Description SY205205
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
SY205205DWCSOD-882ESD protection diode, 2 pins, SilergyESD protection diodeSOD-8822 pinsSilergy
- What it is
- ESD protection diode
- Maker
- Silergy
- Package
- SOD-882
- Pins
- 2
- Details
- Low Capacitance TVS Protection SY205205 Rev.1.0A 1 © 2023 Silergy Corp All Rights Reserved General Description SY205205
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection diode.
TLV9041IDPWX2SONOperational amplifier, 5 pins, Texas InstrumentsOperational amplifierX2SON5 pinsTexas Instruments
- What it is
- Operational amplifier
- Maker
- Texas Instruments
- Package
- X2SON
- Pins
- 5
- Details
- 1.2V Ultra Low Voltage, 10µA Micro-Power RRIO Amplifier for Power Conscious Applications
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
TMP112DIDPWX2SONTemperature sensor, 5 pins, Texas InstrumentsTemperature sensorX2SON5 pinsTexas Instruments
- What it is
- Temperature sensor
- Maker
- Texas Instruments
- Package
- X2SON
- Pins
- 5
- Details
- High-Accuracy, Low-Power, Digital Temperature Sensors With SMBus and Two-Wire Serial Interface in SOT563 and X2SON...
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Integrated circuit.
WL2817DA15-8DFNLDO regulator, WillsemiLDO regulatorDFNNot recordedWillsemi
- What it is
- LDO regulator
- Maker
- Willsemi
- Package
- DFN
- Pins
- Not recorded
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
WSB5508L-2SOD-123Schottky diode, 2 pins, WillsemiSchottky diodeSOD-1232 pinsWillsemi
- What it is
- Schottky diode
- Maker
- Willsemi
- Package
- SOD-123
- Pins
- 2
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Schottky diode.
8 more parts have no package on record
TCR3DG18LDO regulator, ToshibaLDO regulatorNot recordedNot recordedToshiba
- What it is
- LDO regulator
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- TCR3DG series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TCR3UG13ALDO regulator, ToshibaLDO regulatorNot recordedNot recordedToshiba
- What it is
- LDO regulator
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- TCR3UG series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TCR4DG175LDO regulator, ToshibaLDO regulatorNot recordedNot recordedToshiba
- What it is
- LDO regulator
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- TCR4DG series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TCR5RG17ALDO regulator, ToshibaLDO regulatorNot recordedNot recordedToshiba
- What it is
- LDO regulator
- Maker
- Toshiba
- Package
- Not recorded
- Pins
- Not recorded
- Details
- TCR5RG series
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TPS7A0328PYCHLDO regulator, 4 pins, Texas InstrumentsLDO regulatorNot recorded4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- Not recorded
- Pins
- 4
- Details
- Nanopower IQ, 200nA, 200mA, Low-Dropout Voltage Regulator With Fast Transient Response
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TPS7A0510PYKALDO regulator, 4 pins, Texas InstrumentsLDO regulatorNot recorded4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- Not recorded
- Pins
- 4
- Details
- 1-µA Ultralow IQ, 200-mA, Low-Dropout Regulator in a Small-Size Package
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
TPS7A2025PYCJLDO regulator, 4 pins, Texas InstrumentsLDO regulatorNot recorded4 pinsTexas Instruments
- What it is
- LDO regulator
- Maker
- Texas Instruments
- Package
- Not recorded
- Pins
- 4
- Details
- 300mA, Ultra-Low-Noise, Low-IQ, High PSRR LDO
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: Voltage regulator.
VCUT0505B-HD1ESD protection diode, VishayESD protection diodeNot recordedNot recordedVishay
- What it is
- ESD protection diode
- Maker
- Vishay
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Bidirectional Symmetrical (BiSy) Single Line ESD Protection Diode in LLP1006-2L
- Source
- Manufacturer datasheet
Is it dead? The meter test is below: TVS or ESD protection 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.
PIN diode or varicap
Diode range, part lifted or one leg off the pad. Red probe on the anode.
Working, it reads
About 0.6 to 0.9 V anode to cathode, 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.
- 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 varicap that has drifted in capacitance reads normal on a meter. Only a capacitance meter or the tuning itself shows it.
A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.
TVS or ESD protection diode
Diode range, from the protected line to ground, part lifted if you can.
Working, it reads
A one-way part reads about 0.6 to 0.8 V forward and open in reverse. A two-way part reads open both ways. Arrays with several lines read as the datasheet's diagram draws them.
Dead, it reads
- From the line to ground, the same reading both ways, near 0 V with a continuous beep: shorted.
- A reading both ways on a one-way part: leaky.
- A one-way part open both ways: failed open.
- On the board
- , a line reading shorted to ground can be this part or anything else on that line. Lift it: if the short goes with it, it has failed.
- Compare:
- The same part on the next line or connector pin is the healthy reading to compare with.
- Watch for:
- A two-way part reads open both ways when it is good, exactly like one that has failed open. The meter cannot tell them apart; an identical part on the next line can.
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.
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.
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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