Compare the candidate package with the outline, pin count and polarity mark on the actual board.
SMD Marking
D12
Possible components matching this marking.A marking is not a guaranteed identification by itself.
5possible components
MEDIUMambiguity level
Filters5 candidates
Narrow the list using the package, manufacturer or component family printed on the board.
5 possible components
Results are ordered by the available marking evidence.
1 UMD 12N2 evidence sources ROHM Semiconductor smd1 TRANSISTOR HIGH2 sources SMD, DTA144E + DTC144E, Dual Digital Transistor | Si-N/P+RManufacturer hint: ROHM Semiconductor 2 EMD 122 evidence sources ROHM Semiconductor smd1 TRANSISTOR HIGH2 sources SMD, DTA144E + DTC144E, Dual Digital Transistor | Si-N/P+RManufacturer hint: ROHM Semiconductor 3 CZMA 12V2 evidence sources Rectron Semiconductor / Unknown manufacturer (CDI) smd2 DIODE HIGH2 sources SMD, Dual ZENER DIODE, 12V | Z-DiManufacturer hint: Rectron Semiconductor / Unknown manufacturer (CDI) 4 AZ23 C7V52 evidence sources AEG-Telefunken / Vishay / Taiwan Semiconductor smd2 DIODE HIGH2 sources Dual, Common Anode, ±5%, SOT-23 | Z-DiManufacturer hint: AEG-Telefunken / Vishay / Taiwan Semiconductor 5 AZ23 B7V52 evidence sources AEG-Telefunken / Vishay smd2 DIODE HIGH2 sources Dual, Common Anode, ±2%, SOT-23 | Z-DiManufacturer hint: AEG-Telefunken / Vishay
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.