SMD code N4F
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.
N4F is a capacitor marking
0.4 nF
0.4 nF capacitor
The value is printed in full: 0.4 nF.
Check it with a meter
Lift one end and measure it on a capacitance range. A good one reads close to 0.4 nF. In circuit the meter also sees everything connected across it, so the reading means little until it is out. A failed one usually reads near 0 Ω, or a steady low resistance, on the ohms range, often from a crack. On the board a shorted capacitor shorts its whole rail. A failed reading does not change what to fit: the marking still says 0.4 nF.
On a transistor or diode body (SOT-89-5, SON, SOT-89), N4F is a part code instead. Those parts are listed below.
11 parts are printed N4F
Not sure which one you have?
Answer up to 4 quick questions and these 11 parts are ranked, with a meter test that settles it. It works on a dead part too.
S-1131A20PDSONABLICSONNot recordedABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SON
- Pins
- Not recorded
- Details
- VR-IC: LDO, -CE, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131A20UCSOT-89-55 pins, ABLICSOT-89-55 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-89-5
- Pins
- 5
- Details
- VR-IC: LDO, -CE, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20PDSONABLICSONNot recordedABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SON
- Pins
- Not recorded
- Details
- VR-IC: LDO, CE, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20PD-N4F-TFSONSeiko InstrumentsSONNot recordedSeiko Instruments
- What it is
- LDO regulator
- Maker
- Seiko Instruments
- Package
- SON
- Pins
- Not recorded
- Details
- Linear voltage regulator IC: LDO, 2.0V±1%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UASOT-893 pins, ABLICSOT-893 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-89
- Pins
- 3
- Details
- VR-IC: LDO, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UA-N4F-TFSOT-893 pins, Seiko InstrumentsSOT-893 pinsSeiko Instruments
- What it is
- LDO regulator
- Maker
- Seiko Instruments
- Package
- SOT-89
- Pins
- 3
- Details
- Linear voltage regulator IC: LDO, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UA-N4FTFSOT-893 pins, ABLICSOT-893 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-89
- Pins
- 3
- Details
- equivalent [2.0V LDO]
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UCSOT-89-55 pins, ABLICSOT-89-55 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-89-5
- Pins
- 5
- Details
- VR-IC: LDO, CE, 2.0V±1%, 300mA
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UC-N4F-TFSOT-89-55 pins, Seiko InstrumentsSOT-89-55 pinsSeiko Instruments
- What it is
- LDO regulator
- Maker
- Seiko Instruments
- Package
- SOT-89-5
- Pins
- 5
- Details
- Linear voltage regulator IC: LDO, 2.0V±1%, 300mA, +CE
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
S-1131B20UC-N4FTFSOT-89-55 pins, ABLICSOT-89-55 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- SOT-89-5
- Pins
- 5
- Details
- equivalent [2.0V LDO]
- Source
- Published code list
Is it dead? The meter test is below: Voltage regulator.
1 more part has no package on record
S-1131B20PD-N4FTF6 pins, ABLICNot recorded6 pinsABLIC
- What it is
- Not recorded
- Maker
- ABLIC
- Package
- Not recorded
- Pins
- 6
- Details
- equivalent [2.0V LDO]
- 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.
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.
Did you find your part?
Open this in the search to correct a character or try another package.