SMD marking code “S1” — 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 | |
|---|---|---|---|---|
| 1PS76SB10 | PHI | SOD323 | Public marking directory | |
| 1PS76SB21 | PHI | SOD-323 | Public marking directory | |
| 1PS76SB21 | PHI | SC-76/SOD323 | Public marking directory | |
| 1SS239 | TOS* | SOD-323 | Public marking directory | |
| BBY31 | PHI | SOT-23 | Public marking directory | |
| HSMP-3881 | HP | SOT23 | Public marking directory | |
| R1121N311B | RICOH* | SOT-23-5 | Public marking directory | |
| R3116Q181C | RICOH* | SC-82AB | Public marking directory | |
| SD101AW | DIODES | SOD-123 | Public marking directory | |
| SD101AWS | MCC | SOD-323 | Public marking directory | |
| SD101BW | MCC | SOD-123 | Public marking directory | |
| SST271 | SILICONIX-VISHAY | SOT-23 | Public marking directory | |
| BFG310/XR | — | SOT-143R | Public marking directory | |
| ELM7631HCB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| ELM9741CAB | — | SOT-89 | Public marking directory | |
| FS2A | — | DO-214AA | Public marking directory | |
| R1131D111D | — | — | Public marking directory | |
| R1225N602C | — | SOT-23-6W 33so | Public marking directory | |
| R3130N44DA | — | SOT-23 | Public marking directory | |
| RP104Q281D5 | — | SC-82AB | 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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