SMD marking code “3S” — 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 | |
|---|---|---|---|---|
| 2SC3904 | PANASONIC* | SC-59 16ta - 3a Pan | Public marking directory | |
| IMP161SEUS | IMP* | SOT-143 | Public marking directory | |
| MMBT5551 | FS | SOT-23 | Public marking directory | |
| RN5RF13AA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW35CA | RICOH* | SOT-143R | Public marking directory | |
| UNRF1A2 | PANASONIC* | — | Public marking directory | |
| 2SC4805 | — | SC-70 | Public marking directory | |
| CH480YPT | — | SOT-543 | Public marking directory | |
| R3131N29DA3 | — | SOT-23 | Public marking directory | |
| R3133Q46EA | — | SOT-143 | Public marking directory | |
| XC6127N41DNR | — | SSOT-24 | Public marking directory | |
| XC6217D242NR | — | SSOT-24 | Public marking directory | |
| XC6223A391BNR-G | — | SSOT-24 26vn VR4 5a Tor | Public marking directory | |
| XC6223A391NR-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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