SMD marking code “NB” — 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 | |
|---|---|---|---|---|
| BF1109WR | NXP | SOT-343R | Public marking directory | |
| BF599 | INFINEON | SOT-23 | Public marking directory | |
| CFY35-23 | INFINEON | MW-4 | Public marking directory | |
| CHTA42LPT | CRY* | SOT-23 16ta - 3a Chm | Public marking directory | |
| FMMTA55R | ZETEX | SOT-23 | Public marking directory | |
| MIC1810-10U | MICREL* | SOT-23 | Public marking directory | |
| MIC1810-10UY | MICREL* | SOT-23 16vda VD7 3a Mcr | Public marking directory | |
| RN1443B | TOS | SOT-346 | Public marking directory | |
| TC1014-2.6VRX | MIC* | SOT-23-5 | Public marking directory | |
| 2SK1483 | — | SOT-89 | Public marking directory | |
| CHT42PT | — | SOT-23 16ta - 3a Chm | Public marking directory | |
| ETC1810-10U | — | SOT-23 | Public marking directory | |
| KDZ6.2B | — | — | Public marking directory | |
| KRC102S | — | SOT-23 | Public marking directory | |
| KRC402 | — | SOT-323 | Public marking directory | |
| KRC402E | — | SOT-490 | Public marking directory | |
| KRC402V | — | — | Public marking directory | |
| PT7M6247CLC4 | — | SC-70-4 | Public marking directory | |
| PT7M6247CLC4E | — | SC-70-4 | Public marking directory | |
| R5323N010B | — | SOT-23-6 | Public marking directory | |
| RP130Q311D | — | SC-82AB | Public marking directory | |
| XC6120N41N | — | SSOT-24 | Public marking directory | |
| XC6127C18DNR | — | SSOT-24 | Public marking directory | |
| XC6223H211NR-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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