SMD marking code “R28” — 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 | |
|---|---|---|---|---|
| 2SC4093-28 | NEC* | SOT-143 | Public marking directory | |
| 2SC4093RB-H | NEC* | SOT-143 | Public marking directory | |
| 2SC4093S | NEC | SOT143 | Public marking directory | |
| 2SC5011-GB | NEC* | SOT-143 | Public marking directory | |
| 2SC5011S | NEC | SOT343 | Public marking directory | |
| NE85618-GB | NEC* | SOT-143 | Public marking directory | |
| NE85639-28 | NEC* | SOT-143 | Public marking directory | |
| NE85639R-H | NEC* | SOT-143 | Public marking directory | |
| TK11128CS | TOKO* | SOT-23-5 | Public marking directory | |
| R1161N281D | — | SOT-23-5 | 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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