SMD marking code “R33” — 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 | |
|---|---|---|---|---|
| 2SC3583-33 | NEC* | SOT-23 16ta - 3a Nec | Public marking directory | |
| 2SC3583-Q | NEC* | SOT-23 16ta - 3a Nec | Public marking directory | |
| 2SC3583Q | NEC | SOT23 | Public marking directory | |
| 2SC4227 | NEC | SOT323 | Public marking directory | |
| 2SC4227-33 | NEC* | SOT-323 16ta - 3a Nec | Public marking directory | |
| NE68130-33 | NEC* | SOT-323 16ta - 3a Cel | Public marking directory | |
| NE68133-33 | NEC* | SOT-23 16ta - 3a Cel | Public marking directory | |
| NE68133-Q | NEC* | SOT-23 16ta - 3a Cel | Public marking directory | |
| TK11133CS | TOKO* | SOT-23-5 | Public marking directory | |
| XE61CN5345MR | — | SOT-23 16vdb VD6 3h Tor | Public marking directory | |
| XE61CN5345PR | — | 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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