SMD marking code “4K” — 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 | |
|---|---|---|---|---|
| BAP64-04 | NXP | — | Public marking directory | |
| MMSB3000 | MOT | SOD123 | Public marking directory | |
| R3111N241C | RICOH* | SOT-23-5 | Public marking directory | |
| RH5RE34AA | RICOH* | SOT-89 | Public marking directory | |
| RQ5RW49AA | RICOH* | SOT-143R | Public marking directory | |
| UNRF1AF | PANASONIC* | ML3 22ta - 2b Pan | Public marking directory | |
| KIA7434F | — | SOT-89 | Public marking directory | |
| MM1Z4V3 | — | SOD-123 | Public marking directory | |
| MMSD1000 | — | SOD-323 | Public marking directory | |
| MMSZ4V3 | — | SOD-123 | Public marking directory | |
| R1161D141D | — | — | Public marking directory | |
| XC6127N29ENR | — | SSOT-24 | Public marking directory | |
| XC6213B47ANR | — | SSOT-24 | Public marking directory | |
| XC6221D251NR | — | 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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