Compare the candidate package with the outline, pin count and polarity mark on the actual board.
SMD Marking
F12
Possible components matching this marking.A marking is not a guaranteed identification by itself.
2possible components
LOWambiguity level
Filters2 candidates
Narrow the list using the package, manufacturer or component family printed on the board.
2 possible components
Results are ordered by the available marking evidence.
1 2SC2223F122 evidence sources NEC (Nippon Electric Company) smd2 TRANSISTOR HIGH2 sources SMD, FM/VHF | Si-NManufacturer hint: NEC (Nippon Electric Company) 2 DTB 123 EK2 evidence sources ROHM Semiconductor smd2 TRANSISTOR HIGH2 sources SMD, Digital Transistor, Inverter, RB=2.2k RBE=2.2k 2SA1036K | Si-P+RManufacturer hint: ROHM 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.