SMD marking code “FF” — 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 | |
|---|---|---|---|---|
| BBY65-02V | INFINEON | SC79 | Public marking directory | |
| BCV27 | FSC | SOT-23 | Public marking directory | |
| BD4925FVE | ROHM* | VSOF-5 | Public marking directory | |
| BD4925G | ROHM* | SSOP-5 | Public marking directory | |
| BFQ18A | NXP | SOT-89 | Public marking directory | |
| MAX6314US42D4-T | MAX* | SOT-143 | Public marking directory | |
| MAZD091 | PANASONIC* | — | Public marking directory | |
| RN1911FS | TOS | — | Public marking directory | |
| UNR221Z | PANASONIC* | SC-59 | Public marking directory | |
| UNR521Z | PANASONIC* | SOT-523 | Public marking directory | |
| 2SC5569 | — | SOT-89 | Public marking directory | |
| ELM7625LDB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| ELM99151B | — | SOT-89 | Public marking directory | |
| R1141Q251D | — | SOT-143R | Public marking directory | |
| RP130Q171B | — | SC-82AB | Public marking directory | |
| RT9808-17CV | — | SOT-23 16vdb VD6 3a Rct | Public marking directory | |
| UN221Z | — | SC-59 | Public marking directory | |
| UN521Z | — | SOT-523 | Public marking directory | |
| XC6127C26ANR | — | SSOT-24 | Public marking directory | |
| XC6127N26FNR | — | SSOT-24 | Public marking directory | |
| XC6223E321NR-G | — | SSOT-24 | Public marking directory | |
| Z1SMA-51 | — | DO-214AC | 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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