SMD marking code “A21” — 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 | |
|---|---|---|---|---|
| XC6114A332MR | TOREX* | SOT-23-5 | Public marking directory | |
| XC6371A211P | TOREX* | SOT-89 | Public marking directory | |
| 2SK1066-21 | — | — | Public marking directory | |
| 2SK436-21 | — | SOT-23 16fa - 3a San | Public marking directory | |
| CLC452AJM5 | — | SOT-23-5 | Public marking directory | |
| ELM9721NAB | — | SOT-89 | Public marking directory | |
| GS809C21EUA | — | SOT-23 16vdc VD7 3g Vs | Public marking directory | |
| XC31PNS0021AM | — | SOT-23 16cg VR1 3d Tor | Public marking directory | |
| XC31PNS0021AP | — | SOT-89 | Public marking directory | |
| XC31PPS0021AM | — | SOT-23 | Public marking directory | |
| XC31PPS0021AP | — | SOT-89 | 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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