SMD marking code “SR” — 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 | |
|---|---|---|---|---|
| 1SMA40A | ON | — | Public marking directory | |
| 2SC3929-R | PANASONIC* | SOT-323 | Public marking directory | |
| BSS131 | INFINEON | SOT-23 | Public marking directory | |
| KIC7S04FU | KEC AMERICA (USD) | SOT-353 | Public marking directory | |
| SDMP0340LAT | DIODES | — | Public marking directory | |
| 2SC2405-R | — | SOT-23 | Public marking directory | |
| ASM811REUS | — | SOT-143 | Public marking directory | |
| CD214A-T170A | — | DO-214AC | Public marking directory | |
| P4SMAJ170A | — | DO-214AB | Public marking directory | |
| R1122N351B | — | SOT-23-5 | Public marking directory | |
| TV04A171J | — | DO-214AC | Public marking directory | |
| XC6127C40GNR | — | SSOT-24 | Public marking directory | |
| XC6223C32BNR-G | — | 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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