SMD marking code “5J” — 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 | |
|---|---|---|---|---|
| FMMT38B | FERRANTI | SOT-23 | Public marking directory | |
| MMSZ18 | ON* | SOD-123 | Public marking directory | |
| R3111N151C | RICOH* | SOT-23-5 | Public marking directory | |
| RH5RE25AA | RICOH* | SOT-89 | Public marking directory | |
| RQ5RW58AA | RICOH* | SOT-143R | Public marking directory | |
| FT533Ji | — | SOT-89 | Public marking directory | |
| MM1Z18 | — | SOD-123 | Public marking directory | |
| R3131N45EA | — | SOT-23 | Public marking directory | |
| R3132Q18EC | — | SOT-143 | Public marking directory | |
| TCMM5Z13V | — | SOD-523 | 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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