SMD marking code “2B” — 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 | |
|---|---|---|---|---|
| 2N2907 | ST | SOT-23 | Public marking directory | |
| 2SK374 | TOS* | SOT-23 | Public marking directory | |
| BC849B | NXP | SOT-23 | Public marking directory | |
| BC849BW | PHI | SOT-323 | Public marking directory | |
| FMMT2907 | FERRANTI | SOT23 | Public marking directory | |
| KST2907 | FSC | SOT-23 | Public marking directory | |
| MMBT2907 | ON | SOT-23 | Public marking directory | |
| R3111N121A | RICOH* | SOT-23-5 | Public marking directory | |
| RH5RL22AA | RICOH* | SOT-89 | Public marking directory | |
| RN5RL22AA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW21AA | RICOH* | SOT-143R | Public marking directory | |
| SMBT2907 | SIEMENS | SOT-23 16ta - 3a Inf | Public marking directory | |
| YTS2907 | TOS* | SOT-23 | Public marking directory | |
| BC849BT | — | SOT-416 | Public marking directory | |
| KDZ2.2EV | — | SOD-523 | Public marking directory | |
| KDZ2.2V | — | SOD-323 | Public marking directory | |
| KIA7221F | — | SOT-89 | Public marking directory | |
| MM3Z10V | — | SOD-323 | Public marking directory | |
| R1161D121A | — | — | Public marking directory | |
| R3131N22EC | — | SOT-23 | Public marking directory | |
| R3132Q31EA | — | SOT-143 | Public marking directory | |
| RN5VD12CA | — | SOT-23-5 | Public marking directory | |
| TMPT2907 | — | SOT-23 | Public marking directory | |
| XC6127N17CNR | — | SSOT-24 | Public marking directory | |
| XC6213B21ANR | — | SSOT-24 | Public marking directory | |
| XC6221C19BNR | — | SSOT-24 | Public marking directory | |
| Z02W2.2V | — | SOT-23 | 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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