SMD code F2t
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.
The last letter, t, is lower case, which on NXP and Philips parts is a date or factory code, so it was set aside and F2 was searched.
260 parts are printed F2t
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.
LC1463CB5ATR42SOT-23-55 pins, Shanghai LeadChip MicroelectronicsSOT-23-55 pinsShanghai LeadChip Microelectronics
- What it is
- LDO regulator
- Maker
- Shanghai LeadChip Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LC1463CB5BTR12SOT-23-55 pins, Shanghai LeadChip MicroelectronicsSOT-23-55 pinsShanghai LeadChip Microelectronics
- What it is
- LDO regulator
- Maker
- Shanghai LeadChip Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LC1463CB5BTR22SOT-23-55 pins, Shanghai LeadChip MicroelectronicsSOT-23-55 pinsShanghai LeadChip Microelectronics
- What it is
- LDO regulator
- Maker
- Shanghai LeadChip Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LC1463CB5BTR32SOT-23-55 pins, Shanghai LeadChip MicroelectronicsSOT-23-55 pinsShanghai LeadChip Microelectronics
- What it is
- LDO regulator
- Maker
- Shanghai LeadChip Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 3.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LC1463CB5BTR42SOT-23-55 pins, Shanghai LeadChip MicroelectronicsSOT-23-55 pinsShanghai LeadChip Microelectronics
- What it is
- LDO regulator
- Maker
- Shanghai LeadChip Microelectronics
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 4.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LN6203E252FSOT-223Infinewin Electron TechniqueSOT-223Not recordedInfinewin Electron Technique
- What it is
- LDO regulator
- Maker
- Infinewin Electron Technique
- Package
- SOT-223
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 2.5V±2%, 400mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LN6203E252MSOT-893 pins, Infinewin Electron TechniqueSOT-893 pinsInfinewin Electron Technique
- What it is
- LDO regulator
- Maker
- Infinewin Electron Technique
- Package
- SOT-89
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 2.5V±2%, 400mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12FQSOT-3535 pins, LRCSOT-3535 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12FRASOT-23-55 pins, LRCSOT-23-55 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12FRBSOT-23-55 pins, LRCSOT-23-55 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12RQSOT-3535 pins, LRCSOT-3535 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12RRASOT-23-55 pins, LRCSOT-23-55 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-12RRBSOT-23-55 pins, LRCSOT-23-55 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-23-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 1.2V±2%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
LR8555-22FQSOT-3535 pins, LRCSOT-3535 pinsLRC
- What it is
- LDO regulator
- Maker
- LRC
- Package
- SOT-353
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.2V±2%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
1 more part has no package on record
LM4954TLNational SemiconductorNot recordedNot recordedNational Semiconductor
- What it is
- Not recorded
- Maker
- National Semiconductor
- Package
- Not recorded
- Pins
- Not recorded
- Details
- Linear IC: APA, BTL, 2.7..9V, 3W(6V/8), shutdown
- 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.
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.
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