SMD marking code “JB” — 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 | |
|---|---|---|---|---|
| BU4834F | ROHM* | SOP-4 | Public marking directory | |
| BU4834FWE | ROHM* | VSOF-5 | Public marking directory | |
| BU4834G | ROHM* | SSOP-5 | Public marking directory | |
| MAX6315US46D4-T | MAX* | SOT-143 | Public marking directory | |
| TC7SZ125F | TOS | SOT-353 | Public marking directory | |
| TC7SZ125FU | TOS | SOT-353 | Public marking directory | |
| KDZ4.3B | — | — | Public marking directory | |
| RP130Q411B | — | SC-82AB | Public marking directory | |
| RT9166-25CXL | — | SOT-89 | Public marking directory | |
| RT9167A-26CB | — | SOT-23-5 | 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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