SMD marking code “1R” — 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 | |
|---|---|---|---|---|
| FMMT5089 | ZETEX | SOT-23 | Public marking directory | |
| IMP161RCUS | IMP* | SOT-143 | Public marking directory | |
| KST5089 | FSC | SOT-23 | Public marking directory | |
| MMBT5089 | FS | SOT-23 | Public marking directory | |
| UNRF1A0 | PANASONIC* | — | Public marking directory | |
| 2SC4929 | — | SOT-89 | Public marking directory | |
| MM3Z6V2 | — | SOD-323 | Public marking directory | |
| R1210N311A | — | SOT-23-5 | Public marking directory | |
| R3131N44BA | — | SOT-23 | Public marking directory | |
| R3133Q25EA | — | SOT-143 | Public marking directory | |
| R5326N016A | — | SOT-23-6 | Public marking directory | |
| SRA2201E | — | SOT-523 | Public marking directory | |
| SRA2201EF | — | SOT-523F | Public marking directory | |
| SRA2201U | — | SOT-323 | Public marking directory | |
| SRA2201UF | — | SOT-323F | Public marking directory | |
| TMPT5089 | — | SOT-23 | Public marking directory | |
| XC6127N39BNR | — | SSOT-24 | Public marking directory | |
| XC6217C232NR | — | 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