SMD marking code “U9” — 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 | |
|---|---|---|---|---|
| BD45311G | ROHM* | SSOP-5 | Public marking directory | |
| BSR17 | PHI | SOT-23 16ta - 3a Phi | Public marking directory | |
| R3111Q191C | RICOH* | SC-82AB | Public marking directory | |
| R3116Q461C | RICOH* | SC-82AB | Public marking directory | |
| ELM7629LCB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| ELM9719CAB | — | SOT-89 | Public marking directory | |
| R1163D391B | — | — | Public marking directory | |
| R5323N039B | — | SOT-23-6 | Public marking directory | |
| XC6215B402NR | — | SSOT-24 | Public marking directory | |
| XC6223E19BNR-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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