SMD marking code “FY” — 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 | |
|---|---|---|---|---|
| 2SA1202-Y | TOS | SOT-89 | Public marking directory | |
| 2SC5344U-Y | TOS* | SOT-323 18ta - 3a Auk | Public marking directory | |
| MAX6315US49D1-T | MAX* | SOT-143 | Public marking directory | |
| SM6T100A | ST | DO-214AA | Public marking directory | |
| UNR2226 | PANASONIC* | SC-59 | Public marking directory | |
| UNR5226 | PANASONIC* | SOT-523 | Public marking directory | |
| 2SB1571-Y | — | SOT-89 | Public marking directory | |
| 2SC2716-Y | — | SOT-23 | Public marking directory | |
| 2SC3661 | — | SOT-23 | Public marking directory | |
| 2SK1698 | — | SOT-89 | Public marking directory | |
| KTA1662-Y | — | SOT-89 | Public marking directory | |
| KTA2013F-Y | — | TFSM 19ta - 3f Kec | Public marking directory | |
| SiP810C27EUDT | — | SOT-23 | Public marking directory | |
| UN2226 | — | SC-59 | Public marking directory | |
| XC6127C52ANR | — | SSOT-24 | Public marking directory | |
| XC6127N52FNR | — | SSOT-24 | Public marking directory | |
| XC6224A291NR | — | 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.
Can't match your marking?
Send us the code, package and a photo — our team helps identify the part.
Ask our team