SMD marking code “FD” — 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 | |
|---|---|---|---|---|
| 2SC4258-D | TOS* | SC-70 | Public marking directory | |
| 2SC5384-D | TOS* | SC-75A | Public marking directory | |
| BCV26 | FS | SOT-23 | Public marking directory | |
| BD4923FVE | ROHM* | VSOF-5 | Public marking directory | |
| BD4923G | ROHM* | SSOP-5 | Public marking directory | |
| BFP35A | INFINEON | — | Public marking directory | |
| BFQ17 | PHI | SOT-89 | Public marking directory | |
| BFQ17P | INFINEON | SOT89 | Public marking directory | |
| MAX6314US44D4-T | MAX* | SOT-143 | Public marking directory | |
| P6SMBJ220C | LITTLE* | DO-214AA | Public marking directory | |
| UNR221V | PANASONIC* | SC-59 | Public marking directory | |
| UNR521V | PANASONIC* | SOT-523 | Public marking directory | |
| UNR921VJ | PANASONIC* | SC-89 | Public marking directory | |
| 2SC3053-D | — | SC-59 | Public marking directory | |
| 2SC3438-D | — | SOT-89 | Public marking directory | |
| 2SC5567 | — | SOT-89 | Public marking directory | |
| AAT3562IGY-2.70 | — | SOT-23 | Public marking directory | |
| ELM7623LDB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| KDZ33B | — | — | Public marking directory | |
| KRC154F | — | TFSM 19ta - 3k Kec | Public marking directory | |
| R1141Q231D | — | SOT-143R | Public marking directory | |
| RP130Q151B | — | SC-82AB | Public marking directory | |
| RT9808-26CV | — | SOT-23 16vdb VD6 3a Rct | Public marking directory | |
| SiP810CREUDDT | — | SOT-23 | Public marking directory | |
| UN221V | — | SC-59 | Public marking directory | |
| UN521V | — | SOT-523 | Public marking directory | |
| XC6127C22ANR | — | SSOT-24 | Public marking directory | |
| XC6127N22FNR | — | SSOT-24 | Public marking directory | |
| XC6223E301NR-G | — | SSOT-24 | Public marking directory | |
| Z1SMA-47 | — | 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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