SMD marking code “B9” — 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 | |
|---|---|---|---|---|
| 1SS311 | TOS | SOT-23 | Public marking directory | Request quote |
| 1SS397 | TOS | SOT-323 | Public marking directory | |
| 2SC4617 | ON | SOT-416 | Public marking directory | |
| BZX399-C3V9 | PHI | SOD-323 | Public marking directory | |
| BZX399-C3V9 | PHI | SC-76/SOD323 | Public marking directory | |
| BZX399C3V9 | PHI | SOD323 | Public marking directory | |
| BZX84C10 | PHI | SOT-23 16dc - 3a Lge | Public marking directory | Request quote |
| BZX884-C5V1 | NXP | SOD-882 | Public marking directory | |
| MM5Z36V | FSC | SOD-523 | Public marking directory | |
| R3111N192A | RICOH* | SOT-23 | Public marking directory | |
| R3113D291A | RICOH* | — | Public marking directory | |
| R3114Q261A | RICOH* | SC-82AB | Public marking directory | |
| R5421N140C | RICOH* | SOT-23-6 | Public marking directory | |
| TC1015-3.6VRX | MIC* | SOT-23-5 | Public marking directory | |
| BZT52H-C4V3 | — | SOD123F | Public marking directory | |
| ELM9719NAB | — | SOT-89 | Public marking directory | |
| ELM9839AB | — | SOT-89 | Public marking directory | |
| IMB9A | — | SOT-23-6 | Public marking directory | |
| R1111N391A | — | SOT-23-5 | Public marking directory | |
| R1140Q291B | — | SOT-143R | Public marking directory | |
| R1160D191A | — | — | Public marking directory | |
| R1180Q291B | — | SC-82AB | Public marking directory | |
| R3130N29EC | — | SOT-23 | Public marking directory | |
| RN5VD19AA | — | SOT-23-5 | Public marking directory | |
| RT9169-20CV | — | SOT-23 | Public marking directory | |
| RT9169-20CX | — | SOT-89 | Public marking directory | |
| UDZ4V3B | — | SOD-323 | Public marking directory | |
| XC61CC1902M | — | SOT-23 | Public marking directory | |
| XC61CC1902N | — | SOT-143R | Public marking directory | |
| XC61CC1902P | — | SOT-89 | Public marking directory | |
| XC6221B101N | — | SSOT-24 26vn VR4 5a Tor | Public marking directory | |
| XC6221B101NR | — | SSOT-24 | Public marking directory | |
| XC6223A191NR-G | — | SSOT-24 | Public marking directory | |
| XC6GC1902HR | — | 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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