SMD marking code “U3” — 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 | |
|---|---|---|---|---|
| BD45371G | ROHM* | SSOP-5 | Public marking directory | |
| BSS64 | FSC | SOT23 | Public marking directory | |
| R3111Q131C | RICOH* | SC-82AB | Public marking directory | |
| R3116Q401C | RICOH* | SC-82AB | Public marking directory | |
| RN2104FS | TOS | — | Public marking directory | |
| TC74A3-5.0VCT | TOS* | SOT-23-5 | Public marking directory | |
| 2SK613-3 | — | SOT-23 16fa - 3a Soy | Public marking directory | |
| ELM7623LCB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| FES1D | — | DO-214AC | Public marking directory | |
| MMSZ4V7 | — | SOD-123 | Public marking directory | |
| R1131D331D | — | — | Public marking directory | |
| R1163D331B | — | — | Public marking directory | |
| R5323N034B | — | SOT-23-6 | Public marking directory | |
| XC6215B342NR | — | SSOT-24 | Public marking directory | |
| XC6223E13BNR-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.
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