SMD marking code “YN” — 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 | |
|---|---|---|---|---|
| BU4221F | ROHM* | SOP-4 | Public marking directory | |
| BU4221FWE | ROHM* | VSOF-5 | Public marking directory | |
| BU4221G | ROHM* | SSOP-5 | Public marking directory | |
| R5325N022A | RICOH* | SOT-23-6 | Public marking directory | |
| RN2112 | TOS | SOT-416 | Public marking directory | |
| RN2112FT | TOS | — | Public marking directory | |
| RN2312 | TOS | SOT-346 | Public marking directory | |
| 50C02S | — | SMCP 16ta - 3a San | Public marking directory | |
| 50C02SS | — | SSFP 18ta - 3a San | Public marking directory | |
| CZMK39 | — | SOT-23 | Public marking directory | |
| R1210N322D | — | SOT-23-5 | Public marking directory | |
| TV04A360KB | — | DO-214AC | Public marking directory | |
| XC6223H30BNR-G | — | SSOT-24 | 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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