SMD marking code “3B” — 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 | |
|---|---|---|---|---|
| 2SD2620J | ROHM* | SC-89 18ta - 3a Pan | Public marking directory | |
| BC856B | NXP | SOT-23 | Public marking directory | |
| BC856BT | NXP | SOT-416 | Public marking directory | |
| BC856BT | PHI | SC-75/SOT416 | Public marking directory | |
| BC856BW | PHI | SOT-323 | Public marking directory | |
| BC856BW | DIODES | — | Public marking directory | |
| BC857A | MCC | SOT-23 | Public marking directory | |
| CH450FPT | WCH* | SOT-323 16dc - 3a Chm | Public marking directory | |
| FMMT918 | FERRANTI | SOT-23 | Public marking directory | |
| MMBT918 | FSC | SOT23 | Public marking directory | |
| R3111N131A | RICOH* | SOT-23-5 | Public marking directory | |
| RB461F | ROHM | SOT-323 | Public marking directory | |
| RH5RL23AA | RICOH* | SOT-89 | Public marking directory | |
| RN5RL23AA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW31AA | RICOH* | SOT-143R | Public marking directory | |
| BC856BDW | — | SOT-323 | Public marking directory | |
| CMBT918 | — | SOT-23 | Public marking directory | |
| MM3Z47V | — | SOD-323 | Public marking directory | |
| R1161D131A | — | — | Public marking directory | |
| R3131N23EC | — | SOT-23 | Public marking directory | |
| R3132Q41EA | — | SOT-143 | Public marking directory | |
| RN5VD13CA | — | SOT-23-5 | Public marking directory | |
| TMPT918 | — | SOT-23 | Public marking directory | |
| VD4 | — | — | Public marking directory | |
| VD5 | — | — | Public marking directory | |
| VD6 | — | — | Public marking directory | |
| VD7 | — | — | Public marking directory | |
| VR1 | — | — | Public marking directory | |
| VR4 | — | — | Public marking directory | |
| VR7 | — | — | Public marking directory | |
| XC6127N17DNR | — | SSOT-24 | Public marking directory | |
| XC6213B31ANR | — | SSOT-24 | Public marking directory | |
| XC6217D122NR | — | SSOT-24 | Public marking directory | |
| XC6221C49BNR | — | 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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