SMD marking code “B4” — 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 | |
|---|---|---|---|---|
| 2SC4175-4 | NEC* | SOT-323 | Public marking directory | |
| BAT54W | NXP | SOT-323 | Public marking directory | |
| BD4733G | ROHM* | — | Public marking directory | |
| BSV52R | PHI | SOT-23 | Public marking directory | |
| BZT52H-C2V7 | PHI | SOD123F | Public marking directory | |
| BZX399-C2V4 | PHI | SOD-323 | Public marking directory | |
| BZX399-C2V4 | PHI | SC-76/SOD323 | Public marking directory | |
| BZX399C2V4 | PHI | SOD323 | Public marking directory | |
| FSS25 | SANYO* | DO-214AA | Public marking directory | |
| HSMS-2814 | AGILENT | SOT-23 | Public marking directory | |
| HSMS-281F | AGILENT | SOT-323 | Public marking directory | |
| LM4667ITL | NSC | BGA-9 | Public marking directory | |
| LM4667ITLX | NSC | BGA-9 | Public marking directory | |
| MBR0540 | FSC | SOD-123 | Public marking directory | |
| MBRA140 | ON* | DO-214AC | Public marking directory | |
| MMSZ5223B | DIODES | SOD-123 | Public marking directory | |
| R3111N142A | RICOH* | SOT-23 | Public marking directory | |
| R3113D241A | RICOH* | — | Public marking directory | |
| R3114Q211A | RICOH* | SC-82AB | Public marking directory | |
| R5421N133C | RICOH* | SOT-23-6 | Public marking directory | |
| 2SC1621-4 | — | SOT-23 | Public marking directory | |
| 2SC4987-4 | — | SMCP | Public marking directory | |
| AP432AW | — | SOT-23-3L | Public marking directory | |
| BAS70SPT | — | SC-59 16dl - 3a Chm | Public marking directory | |
| BZX884-C3V3 | — | SOD-882 | Public marking directory | |
| ELM9714NAB | — | SOT-89 | Public marking directory | |
| ELM9834AB | — | SOT-89 | Public marking directory | |
| KA4F4M | — | SC-75 | Public marking directory | |
| MSCD054 | — | 0805 | Public marking directory | |
| R1111N341A | — | SOT-23-5 | Public marking directory | |
| R1140Q241B | — | SOT-143R | Public marking directory | |
| R1160D141A | — | — | Public marking directory | |
| R1180Q241B | — | SC-82AB | Public marking directory | |
| R3130N24EC | — | SOT-23 | Public marking directory | |
| RN5VD14AA | — | SOT-23-5 | Public marking directory | |
| RT9169-15CV | — | SOT-23 | Public marking directory | |
| RT9169-15CX | — | SOT-89 | Public marking directory | |
| SSCD054 | — | 1206 | Public marking directory | |
| UDZ2V7B | — | SOD-323 | Public marking directory | |
| XC6223A141NR-G | — | SSOT-24 | Public marking directory | |
| XC6GC1402HR | — | USP-3 | 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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