Compare the candidate package with the outline, pin count and polarity mark on the actual board.
SMD Marking
M4
Possible components matching this marking.A marking is not a guaranteed identification by itself.
10possible components
HIGHambiguity level
Filters10 candidates
Narrow the list using the package, manufacturer or component family printed on the board.
10 possible components
Results are ordered by the available marking evidence.
1 2SA1179-M42 evidence sources Sanyo Semiconductor smd2 TRANSISTOR HIGH2 sources SMD, Uni | Si-PManufacturer hint: Sanyo Semiconductor 2 MMSZ 5259BS2 evidence sources Taiwan Semiconductor dil1 DIODE HIGH2 sources SMD, Surface Mount Zener Diode, 39V 200mW | Z-DiManufacturer hint: Taiwan Semiconductor 3 MMSZ 5259B2 evidence sources Taiwan Semiconductor smd1 DIODE HIGH2 sources SMD, Surface Mount Zener Diode, 39V 500mW | Z-DiManufacturer hint: Taiwan Semiconductor 4 BZX384-B182 evidence sources Philips Semiconductors dil1 DIODE HIGH2 sources SMD, Voltage regulator diode, 18V, Tolerance ±2% | Z-DiManufacturer hint: Philips Semiconductors 5 KST 812M42 evidence sources Samsung Semiconductor smd2 TRANSISTOR HIGH2 sources SMD, Uni | Si-PManufacturer hint: Samsung Semiconductor 6 PMEG 6010AED2 evidence sources Philips Semiconductors - DIODE HIGH2 sources SMD, Schottky barrier diode, 60V | Si-DiManufacturer hint: Philips Semiconductors 7 MMSZ 52592 evidence sources Vishay smd1 DIODE HIGH2 sources SMD, Silicon Planar Zener Diode | Z-DiManufacturer hint: Vishay 8 MBD 110 DWT12 evidence sources Motorola smd1 DIODE HIGH2 sources SMD, Schottky Barrier Diode, UHF/VHF Detector | Si-DiManufacturer hint: Motorola 9 2SA 812-M42 evidence sources NEC (Nippon Electric Company) smd2 TRANSISTOR HIGH2 sources SMD, Uni | Si-PManufacturer hint: NEC (Nippon Electric Company) 10 BSR 562 evidence sources National Semiconductor / Philips Semiconductors / Thomson Semiconducteurs / Valvo / Fairchild Semiconductor smd2 FET HIGH2 sources SMD, Low Power Amplifier, 40V 20mA 0.25W | Si-NManufacturer hint: National Semiconductor / Philips Semiconductors / Thomson Semiconducteurs / Valvo / Fairchild 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.