SMD marking code “3F” — 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 | |
|---|---|---|---|---|
| BC857B | NXP | SOT-23 | Public marking directory | |
| BC857BF | PHI | SOT-490 | Public marking directory | |
| BC857BT | PHI | SOT-416 | Public marking directory | |
| BC857BT | PHI | SC-75/SOT416 | Public marking directory | |
| BC857BT | MCC | SOT-523 | Public marking directory | |
| BC857BV | PHI | SOT-666 | Public marking directory | |
| BC857BW | PHI | SOT-323 | Public marking directory | |
| MAZD030 | PANASONIC* | — | Public marking directory | |
| R3111N531A | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW35AA | RICOH* | SOT-143R | Public marking directory | |
| 2SD5609 | — | SSSMini3 18ta - 3a Pan | Public marking directory | |
| BC857BDW | — | SOT-363 | Public marking directory | |
| CH461FPT | — | SOT-323 16dc - 3a Chm | Public marking directory | |
| MM3Z68V | — | SOD-323 | Public marking directory | |
| R1161D131B | — | — | Public marking directory | |
| R3132Q45EA | — | SOT-143 | Public marking directory | |
| RN5VD53CA | — | SOT-23-5 | Public marking directory | |
| XC6127N25DNR | — | SSOT-24 | Public marking directory | |
| XC6213B35ANR | — | SSOT-24 | Public marking directory | |
| XC6217D162NR | — | SSOT-24 | Public marking directory | |
| XC6223A321NR-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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