Compare the candidate package with the outline, pin count and polarity mark on the actual board.
SMD Marking
F4
Possible components matching this marking.A marking is not a guaranteed identification by itself.
17possible components
VERY HIGHambiguity level
Filters17 candidates
Narrow the list using the package, manufacturer or component family printed on the board.
17 possible components
Results are ordered by the available marking evidence.
1 RN 1905FS2 evidence sources Toshiba smd1 TRANSISTOR HIGH2 sources SMD,Transistor Silicon NPN Epitaxial Type, 20V 50mA 50mW | Si-N+RManufacturer hint: Toshiba 2 MMSZ 5239BS2 evidence sources Taiwan Semiconductor dil1 DIODE HIGH2 sources SMD, Surface Mount Zener Diode, 9,1V 200mW | Z-DiManufacturer hint: Taiwan Semiconductor 3 MMSZ 5239B2 evidence sources Taiwan Semiconductor smd1 DIODE HIGH2 sources SMD, Surface Mount Zener Diode, 9,1V 500mW | Z-DiManufacturer hint: Taiwan Semiconductor 4 HSMP 38242 evidence sources Agilent Technologies smd2 DIODE HIGH2 sources SMD, Dual Pin Diode, 35V 1A | Si-DiManufacturer hint: Agilent Technologies 5 PZU 3.0B12 evidence sources Philips Semiconductors dil1 DIODE HIGH2 sources SMD, Voltage regulator diode, 3V | Z-DiManufacturer hint: Philips Semiconductors 6 PBLS 6004 D2 evidence sources Philips Semiconductors smd1 TRANSISTOR HIGH2 sources SMD, Complement. Pair Amp., 60V 0.7A 0.25W | Si-N/P+RManufacturer hint: Philips Semiconductors 7 PMEG 4002EL2 evidence sources Philips Semiconductors smd1 DIODE HIGH2 sources SMD, Schottky barrier diode, 40V | Si-DiManufacturer hint: Philips Semiconductors 8 MMSZ 52392 evidence sources Vishay smd1 DIODE HIGH2 sources SMD, Silicon Planar Zener Diode | Z-DiManufacturer hint: Vishay 9 KDV 202 ED2 evidence sources KEC Semiconductor smd1 DIODE HIGH2 sources SMD, FM Tuning Diode, 6V | C-DiManufacturer hint: KEC Semiconductor 10 HVU 383 B2 evidence sources Hitachi / Renesas Electronics dil1 DIODE HIGH2 sources SMD, Capacitance Diode | C-DiManufacturer hint: Hitachi / Renesas Electronics 11 HVC 383 B2 evidence sources Hitachi / Renesas Electronics dil1 DIODE HIGH2 sources SMD, VCO | DiManufacturer hint: Hitachi / Renesas Electronics 12 FRS 1G2 evidence sources Fagor Electronica smd1 DIODE HIGH2 sources SMD, Fast Recovery Rectifier, 400V, 1A | Si-DiManufacturer hint: Fagor Electronica 13 2SC 2814-F42 evidence sources Sanyo Semiconductor smd2 TRANSISTOR HIGH2 sources SMD, HF | Si-NManufacturer hint: Sanyo Semiconductor 14 BZX 585-C3V32 evidence sources Philips Semiconductors smd1 DIODE HIGH2 sources SMD, Voltage regulator diode, 5% Tolerance, 3,3V | Z-DiManufacturer hint: Philips Semiconductors 15 BZD27 C36P2 evidence sources Vishay / Taiwan Semiconductor smd1 DIODE HIGH2 sources SMD, Voltage regulator | Z-Di, ICManufacturer hint: Vishay / Taiwan Semiconductor 16 2SC1009-F42 evidence sources NEC (Nippon Electric Company) smd2 TRANSISTOR HIGH2 sources SMD, HF-ra | Si-NManufacturer hint: NEC (Nippon Electric Company) 17 KST 1009F42 evidence sources Samsung Semiconductor smd2 TRANSISTOR HIGH2 sources SMD, AM/FM | Si-NManufacturer hint: Samsung Semiconductor
Safe identification
How to verify this result
Check the official datasheet for pinout, voltage, current and thermal ratings—not only the marking.
Do not treat a short marking, a low-confidence candidate or a family match as a drop-in replacement.