SMD code L9-
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.
83 parts are printed L9-
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.
EC95808N39C1NSOT-323Voltage supervisor, 3 pins, E-CMOSVoltage supervisorSOT-3233 pinsE-CMOS
- What it is
- Voltage supervisor
- Maker
- E-CMOS
- Package
- SOT-323
- Pins
- 3
- Details
- Voltage detector IC: 3.9V±2%, -Reset ODO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
ELM7339NAC1ASOT-343Voltage supervisor, 4 pins, ELM TechnologyVoltage supervisorSOT-3434 pinsELM Technology
- What it is
- Voltage supervisor
- Maker
- ELM Technology
- Package
- SOT-343
- Pins
- 4
- Details
- Voltage detector IC: 3.9V+1.2%, -Reset ODO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
ELM7339NBC1ASOT-353Voltage supervisor, 5 pins, ELM TechnologyVoltage supervisorSOT-3535 pinsELM Technology
- What it is
- Voltage supervisor
- Maker
- ELM Technology
- Package
- SOT-353
- Pins
- 5
- Details
- Voltage detector IC: 3.9V±1.2%, -Reset ODO, -MR
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
ELM7629LABSOT-23Voltage supervisor, 3 pins, ELM TechnologyVoltage supervisorSOT-233 pinsELM Technology
- What it is
- Voltage supervisor
- Maker
- ELM Technology
- Package
- SOT-23
- Pins
- 3
- Details
- Voltage detector IC: 2.9V±2%, -Reset PPO, Rdt=250ms
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
FML9SOT-23-5PNP transistor, 5 pins, ROHMPNP transistorSOT-23-55 pinsROHM
- What it is
- PNP transistor
- Maker
- ROHM
- Package
- SOT-23-5
- Pins
- 5
- Details
- PNP transistor + diode
- Source
- Published code list
Is it dead? The meter test is below: PNP transistor.
FP6811-44NSAGSOT-143Voltage supervisor, 4 pins, FitipowerVoltage supervisorSOT-1434 pinsFitipower
- What it is
- Voltage supervisor
- Maker
- Fitipower
- Package
- SOT-143
- Pins
- 4
- Details
- Voltage detector IC: 4.38V±1.5%, +Reset ODO, -MR, Green package
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
P6SMZ47ATGSOD-128TVS diode, 2 pins, Fagor ElectronicaTVS diodeSOD-1282 pinsFagor Electronica
- What it is
- TVS diode
- Maker
- Fagor Electronica
- Package
- SOD-128
- Pins
- 2
- Details
- Transient voltage supressor: Vrm=40.2V, Vbr=44.7..49.4V, Ipp=9.3A, 600W
- Source
- Published code list
Is it dead? The meter test is below: TVS or ESD protection diode.
8 more parts have no package on record
EC95808N39C7IVoltage supervisor, E-CMOSVoltage supervisorNot recordedNot recordedE-CMOS
- What it is
- Voltage supervisor
- Maker
- E-CMOS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.9V±2%, -Reset ODO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
EC95808N39C7SVoltage supervisor, E-CMOSVoltage supervisorNot recordedNot recordedE-CMOS
- What it is
- Voltage supervisor
- Maker
- E-CMOS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.9V±2%, -Reset ODO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HD74LV1G66ACMRenesasNot recordedNot recordedNot recordedRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Single-pole single-throw analog switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HD74LV1G66ACMERenesasNot recordedNot recordedNot recordedRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS-Logic: Bilateral analogic switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HD74LV1G66AVSRenesasNot recordedNot recordedNot recordedRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS logic IC: Single-pole single-throw analog switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
HD74LV1G66AVSERenesasNot recordedNot recordedNot recordedRenesas
- What it is
- Not recorded
- Maker
- Renesas
- Package
- Not recorded
- Pins
- Not recorded
- Details
- CMOS-Logic: Bilateral analogic switch
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
IXD5120C392NR-GVoltage supervisor, IXYSVoltage supervisorNot recordedNot recordedIXYS
- What it is
- Voltage supervisor
- Maker
- IXYS
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Voltage detector IC: 3.9V±2% -Reset PPO
- Source
- Published code list
Is it dead? The meter test is below: Integrated circuit.
R1100D091CNisshinbo Micro DevicesNot recordedNot recordedNot recordedNisshinbo Micro Devices
- What it is
- Not recorded
- Maker
- Nisshinbo Micro Devices
- Package
- Not recorded
- Pins
- Not recorded
- Details
- VR-IC: U-low Icc, 0.9V±2%, 180mA
- 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.
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.
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.
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.
Did you find your part?
Open this in the search to correct a character or try another package.