SMD marking code “12” — candidate parts
Small packages rarely print the full part number. The marking below maps to these part numbers — verify against the package, pin count and the manufacturer's datasheet before ordering.
Candidate part numbers
| Part number | Manufacturer | Package | Mapping basis | |
|---|---|---|---|---|
| UPA1428AH(1)-AZ | NEC | ZIP-10 | Stock-record verified | |
| BU4S01G2 | ROHM* | SSOP-5 | Public marking directory | |
| BU4S81G2 | ROHM* | SSOP-5 | Public marking directory | |
| CMZ12 | TOS | — | Public marking directory | |
| DTA123EKA | ROHM | SOT-346 | Public marking directory | |
| DTA123EUA | ROHM | — | Public marking directory | |
| ESD5V0K5 | MCC | SOT-363 | Public marking directory | |
| MAZ8120 | PANASONIC* | SC-76 | Public marking directory | |
| MAZS120 | PANASONIC* | SC-79 | Public marking directory | |
| MAZS1200L | PANASONIC* | SC-79 | Public marking directory | |
| MUN5312DW1 | MOT | SOT363 | Public marking directory | |
| P6SMBJ12 | LITTLE* | DO-214AA | Public marking directory | |
| R3111Q121B | RICOH* | SC-82AB | Public marking directory | |
| DTA123EE | — | SOT-416 | Public marking directory | |
| DTA123EM | — | — | Public marking directory | |
| KDZ12EV | — | SOD-523 | Public marking directory | |
| KDZ12V | — | SOD-323 | Public marking directory | |
| MAZ5120 | — | — | Public marking directory | |
| MAZW120H | — | — | Public marking directory | |
| MAZY120 | — | NMiniP2 | Public marking directory | |
| MM3Z27V | — | SOD-323 | Public marking directory | |
| MSCT12 | — | SOT-23 | Public marking directory | |
| MUN5312DW | — | SOT-363 | Public marking directory | |
| R1163D221E | — | — | Public marking directory | |
| R1223N502D | — | SOT-23-5 | Public marking directory | |
| SML4742 | — | DO-214 | Public marking directory | |
| U1Z12 | — | SOD-6 | Public marking directory | |
| U1ZB12 | — | I-FLAT | Public marking directory | |
| XC6213B122NR | — | SSOT-24 | Public marking directory | |
| XC6221C401NR | — | SSOT-24 | Public marking directory | |
| Z02W12V | — | SOT-23 | Public marking directory | |
| ZD27V0 | — | SOD-322 | Public marking directory |
How these mappings are compiled: from public SMD marking directories and from our own stock records (marked Stock-record verified). We keep the original reference of every row internally so any mapping can be traced on request.
Markings are indicative only: the same code can denote different parts across manufacturers and packages. Always confirm with the physical batch marking and the original datasheet.
* Manufacturer derived from the part-number family (some directory entries carry no manufacturer) — treat it as a lead, not a datasheet fact.
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