SMD marking code “BB” — 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 | |
|---|---|---|---|---|
| 1SV128 | TOS | SOT-23 | Public marking directory | |
| 1SV237 | TOS | SOT-143 | Public marking directory | |
| A51 | PHI | SOT-23-5 | Public marking directory | |
| BAR81 | INFINEON | SOT143 | Public marking directory | |
| BCW61B | NSC | SOT-23 | Public marking directory | |
| BCX54-6 | INFINEON | SOT-89 | Public marking directory | |
| BD4720G | ROHM* | — | Public marking directory | |
| BZT52H-C5V1 | PHI | SOD123F | Public marking directory | |
| BZX399-C5V1 | PHI | SOD-323 | Public marking directory | |
| BZX399-C5V1 | PHI | SC-76/SOD323 | Public marking directory | |
| BZX399C5V1 | PHI | SOD323 | Public marking directory | |
| MAX821TUS-T | MAX* | SOT-143 | Public marking directory | |
| MMBZ5242B | FSC | SOT-23 16dc - 3a Lge | Public marking directory | |
| PI74STX1G126CX | PERICOM | SC-70-5 | Public marking directory | |
| PI74STX1G126TX | PERICOM* | SOT-23-5 | Public marking directory | |
| R3112Q111A | RICOH* | SC-82AB | Public marking directory | |
| R5421N139F | RICOH* | SOT-23-6 | Public marking directory | |
| RN5RT31AA | RICOH* | SOT-23-5 | Public marking directory | |
| UDZ5V1B | DIODES | SOD-323 | Public marking directory | |
| UDZ5V6B | DIODES | — | Public marking directory | |
| 2SB831-B | — | MPAK 16ta - 3a Hit | Public marking directory | |
| 2SD1367-B | — | SOT-89 | Public marking directory | |
| 2SD1367-BB | — | SOT-89 | Public marking directory | |
| A31 | — | SOT-23-5 | Public marking directory | |
| A32A | — | — | Public marking directory | |
| A34 | — | SO-8 | Public marking directory | |
| A34A | — | — | Public marking directory | |
| A35A | — | — | Public marking directory | |
| A36 | — | SOT-23-5 | Public marking directory | |
| A38 | — | SOT-23-5 | Public marking directory | |
| A40 | — | SOT-23-5 | Public marking directory | |
| A42 | — | SOT-23-5 | Public marking directory | |
| A43 | — | SOT-23-5 | Public marking directory | |
| A44 | — | SOT-23-5 | Public marking directory | |
| A50 | — | SOT-23-5 | Public marking directory | |
| A52 | — | SOT-23-5 | Public marking directory | |
| A58 | — | SOT-23-5 | Public marking directory | |
| A59 | — | SOT-23-5 | Public marking directory | |
| A82 | — | SOT-23-6 | Public marking directory | |
| A85 | — | SOT-23-6 | Public marking directory | |
| A86 | — | SOT-23-5 | Public marking directory | |
| A86A | — | SO-8 | Public marking directory | |
| AP432IAY | — | SOT-89-3L | Public marking directory | |
| B34 | — | SOT-23-5 | Public marking directory | |
| B37A | — | — | Public marking directory | |
| B42 | — | SOT-23-5 | Public marking directory | |
| B43 | — | SOT-23-5 | Public marking directory | |
| BAS40APT | — | SOT-23 16df - 3a Chm | Public marking directory | |
| BC846BPDW | — | SOT-363 | Public marking directory | |
| BCX54-06 | — | SOT-89 | Public marking directory | |
| BZX884-C6V2 | — | SOD-882 | Public marking directory | |
| C37A | — | SOT-89-5 | Public marking directory | |
| Cathode1 | — | — | Public marking directory | |
| D5A | — | SOT-23-5 | Public marking directory | |
| E37A | — | SOT-89-5 | Public marking directory | |
| ELM99311B | — | SOT-89 | Public marking directory | |
| GS6333UR22D3 | — | SOT-23 | Public marking directory | |
| PT7M7812YTB | — | SOT-143 | Public marking directory | |
| PT7M7812YTBE | — | SOT-143 | Public marking directory | |
| R1141Q211B | — | SOT-143R | 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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