SMD marking code “AY” — 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 | |
|---|---|---|---|---|
| 2SC2880-Y | TOS | SOT-89 | Public marking directory | |
| 2SC4210-Y | TOS | SC-59 16ta - 3a Tos | Public marking directory | |
| 2SC5342U-Y | TOS* | SOT-323 | Public marking directory | |
| 2SC5342UF-Y | TOS* | SOT-323F | Public marking directory | |
| BCX70KR | FERRANTI | SOT-23R | Public marking directory | |
| BCX70RK | TELEFUNKEN | SOT-23 | Public marking directory | |
| MMBD1000 | MOT | SOT-23 | Public marking directory | |
| MMBZ5239B | FSC | SOT-23 16dc - 3a Lge | Public marking directory | |
| P6SMBJ11C | LITTLE* | DO-214AA | Public marking directory | |
| TC1014-1.8VRX | MIC* | SOT-23-5 | Public marking directory | |
| XC61119C08ANR-G | TOREX* | SSOT-24 26gh VD3 5c Tor | Public marking directory | |
| XC6119C08ANR | TOREX* | SSOT-24 | Public marking directory | |
| 2SA1979U-Y | — | SOT-323 | Public marking directory | |
| 2SA1979UF-Y | — | SOT-323F | Public marking directory | |
| 2SA1980E-Y | — | SOT-523 16ta - 3a Auk | Public marking directory | |
| 2SA1980EF-Y | — | SOT-523F 18ta - 3a Auk | Public marking directory | |
| GS6333UR21D3 | — | SOT-23 | Public marking directory | |
| KTC4372-Y | — | SOT-89 | Public marking directory | |
| P4SMA16 | — | DO-214AC | Public marking directory | |
| PT7M7812STB | — | SOT-143 | Public marking directory | |
| PT7M7812STBE | — | SOT-143 | Public marking directory | |
| RT9161-17CX | — | SOT-89 | Public marking directory | |
| SiP6333R21D3 | — | SOT-23 | Public marking directory | |
| SiP825YEU | — | SOT-23-5 | Public marking directory | |
| TV04A110K | — | DO-214AC | Public marking directory | |
| TV06B110KB | — | DO-214AA | Public marking directory | |
| XC6109C08AN | — | SSOT-24 | Public marking directory | |
| XC6127C51FNR | — | SSOT-24 | Public marking directory | |
| XC6127N52ANR | — | SSOT-24 | Public marking directory | |
| XC6221A29BN | — | SSOT-24 26vn VR4 5a Tor | Public marking directory | |
| XC6221A29BNR | — | 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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