SMD marking code “37” — 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 | |
|---|---|---|---|---|
| 3S7 | DIODES | — | Public marking directory | |
| PA12 | CIRRUS | — | Public marking directory | |
| PA13 | APEX MICROTECHNOLOGY | — | Public marking directory | |
| PA52 | CIRRUS | — | Public marking directory | |
| PA61 | CIRRUS | — | Public marking directory | |
| R3111Q371B | RICOH* | SC-82AB | Public marking directory | |
| RN5RF37AA | RICOH* | SOT-23-5 | Public marking directory | |
| RN5RZ37AA | RICOH* | SOT-23-5 | Public marking directory | |
| CH3906M1PT | — | FBPT-723 17ta - 9a Chm | Public marking directory | |
| CH3906MPT | — | SOT-723 18ta - 3a Chm | Public marking directory | |
| ELM9837BB | — | SOT-23 16cg VR1 3d Elm | Public marking directory | |
| HMSZ5237B | — | SOD-323 | Public marking directory | |
| PA11 | — | — | Public marking directory | |
| PA15 | — | — | Public marking directory | |
| PA19 | — | — | Public marking directory | |
| PA30 | — | — | Public marking directory | |
| PA34 | — | — | Public marking directory | |
| PA35 | — | — | Public marking directory | |
| PA4 | — | — | Public marking directory | |
| PA5 | — | — | Public marking directory | |
| PA6 | — | — | Public marking directory | |
| PA63 | — | — | Public marking directory | |
| PA64 | — | — | Public marking directory | |
| PA65 | — | — | Public marking directory | |
| R1223N182G | — | SOT-23-5 | Public marking directory | |
| UTC8137 | — | SOT-89 | Public marking directory | |
| XC6213B372NR | — | SSOT-24 | Public marking directory | |
| XC6217D082NR | — | SSOT-24 | Public marking directory | |
| XC6221C45BNR | — | SSOT-24 | Public marking directory | |
| ZD5237BS2 | — | SOD-323 | 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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