SMD marking code “3D” — 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 | |
|---|---|---|---|---|
| BC856 | NXP | SOT-23 | Public marking directory | |
| BC856S | NXP | — | Public marking directory | |
| MMBTA55 | MCC | SOT-23 | Public marking directory | |
| MMBTH81 | FS | SOT-23 | Public marking directory | |
| MMBTH81L | MOT | SOT23 | Public marking directory | |
| R3111N331A | RICOH* | SOT-23-5 | Public marking directory | |
| RB715F | MCC | SOT-323 | Public marking directory | |
| RB715W | MCC | SOT-523 | Public marking directory | |
| RB717F | MCC | SOT-323 | Public marking directory | |
| RH5RL43AA | RICOH* | SOT-89 | Public marking directory | |
| RN5RL43AA | RICOH* | SOT-23-5 | Public marking directory | |
| RN5VD33CA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW33AA | RICOH* | SOT-143R | Public marking directory | |
| CH715FPT | — | SOT-323 16df - 3a Chm | Public marking directory | |
| MM3Z56V | — | SOD-323 | Public marking directory | |
| R1161D331A | — | — | Public marking directory | |
| R3131N43EC | — | SOT-23 | Public marking directory | |
| R3132Q43EA | — | SOT-143 | Public marking directory | |
| VR1 | — | — | Public marking directory | |
| WOSD03 | — | SOD-323 | Public marking directory | |
| XC6127N21DNR | — | SSOT-24 | Public marking directory | |
| XC6213B33ANR | — | SSOT-24 | Public marking directory | |
| XC6217D142NR | — | SSOT-24 | Public marking directory | |
| XC6223A301NR-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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