SMD marking code “K4” — 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 | |
|---|---|---|---|---|
| 2SC3143-4 | TOS* | SOT-23 | Public marking directory | |
| 2SK2836 | TOS | SOT-89 | Public marking directory | |
| 2SK853-4 | TOS* | SOT-323 16fa - 3a Nec | Public marking directory | |
| BAP50-02 | PHI | SOD-523 | Public marking directory | |
| BCW71R | MOT | SOT-23 | Public marking directory | |
| HSMP-3834 | HP | SOT-23 | Public marking directory | |
| MAX810STR | ON | SOT-23 | Public marking directory | |
| MMBZ5254B | FS | SOT-23 | Public marking directory | |
| MMBZ5254BW | DIODES | SOT-323 | Public marking directory | |
| MMSZ5231B | FSC | SOD-123 | Public marking directory | |
| MMSZ5254B | MCC | SOD-123 | Public marking directory | |
| MMSZ5254BS | DIODES | SOD-323 | Public marking directory | |
| MMSZ5254BS | DIODES | — | Public marking directory | |
| MMSZ5255B | DIODES | — | Public marking directory | |
| MMXZ5255B | MCC | SOD-323 | Public marking directory | |
| R3111N242C | RICOH* | SOT-23 | Public marking directory | |
| R5426D105CA | RICOH* | — | Public marking directory | |
| R5426N105CA | RICOH* | SOT-23-6 | Public marking directory | |
| RN2965FS | TOS | — | Public marking directory | |
| RN5RG34AA | RICOH* | SOT-23-5 | Public marking directory | |
| RN5RY241A | RICOH* | SOT-23-5 | Public marking directory | |
| 2SK160-4 | — | SC-59 16fh - 3a Nec | Public marking directory | |
| A1/A2 | — | — | Public marking directory | |
| BZX384-B3V3 | — | SOD-323 | Public marking directory | |
| ELM7644HAB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| K1/A2 | — | — | Public marking directory | |
| KA4L4L | — | SC-75 | Public marking directory | |
| MMSZ52354 | — | SOD-123 | Public marking directory | |
| RT9167A-19CBR | — | SOT-23-5 | Public marking directory | |
| XC6223E141NR-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.
Can't match your marking?
Send us the code, package and a photo — our team helps identify the part.
Ask our team