SMD marking code “3J” — 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 | |
|---|---|---|---|---|
| BC858A | INFINEON | SOT-23 | Public marking directory | |
| BC858AT | PHI | SOT-416 | Public marking directory | |
| BC858AT | PHI | SC-75 | Public marking directory | |
| BC858AW | INFINEON | SOT-323 | Public marking directory | |
| BC858B | MCC | SOT-23 | Public marking directory | |
| BCV62A | INFINEON | SOT-143 | Public marking directory | |
| IMP161JEUS | IMP* | SOT-143 | Public marking directory | |
| MMBTH69 | MOT | SOT23 | Public marking directory | |
| R3111N131C | RICOH* | SOT-23-5 | Public marking directory | |
| RB706F-40 | ROHM | SOT-323 | Public marking directory | |
| RB715F | MCC | SOT-323 | Public marking directory | |
| RH5RE23AA | RICOH* | SOT-89 | Public marking directory | |
| RQ5RW38AA | RICOH* | SOT-143R | Public marking directory | |
| BAT54WSPT | — | SOT-323 16dl - 3a Chm | Public marking directory | |
| R3131N43EA | — | SOT-23 | Public marking directory | |
| R3132Q48EA | — | SOT-143 | 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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