SMD marking code “D4” — 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 | |
|---|---|---|---|---|
| 2SA1252-4 | TOS* | SOT-23 | Public marking directory | |
| AZ23C3V6 | DIODES | SOT-23 | Public marking directory | |
| BCW31R | PHI | SOT-23R | Public marking directory | |
| HSMP-3804 | AGILENT | SOT-23 | Public marking directory | |
| MMBD4148SE | FS | SOT-23 | Public marking directory | |
| MMBD4148TW | MCC | SOT-363 | Public marking directory | |
| MMBZ5229B | FSC | SOT-23 | Public marking directory | |
| MMBZ5229BW | DIODES | SOT-323 | Public marking directory | |
| MMSZ5226B | FSC | SOD-123 | Public marking directory | |
| MMSZ5229B | FSC | SOD-123 | Public marking directory | |
| R3111N342A | RICOH* | SOT-23 | Public marking directory | |
| R3113D441A | RICOH* | — | Public marking directory | |
| R3114Q411A | RICOH* | SC-82AB | Public marking directory | |
| RN2905AFS | TOS* | — | Public marking directory | |
| RN5VD34AA | RICOH* | SOT-23-5 | Public marking directory | |
| SBR1U150SA | DIODES | — | Public marking directory | |
| SBR2A30P1 | DIODES | — | Public marking directory | |
| TC1055-3.3VCT713 | MIC | SOT-23-5 | Public marking directory | |
| TC54VC3402ECB | MIC* | SOT-23 | Public marking directory | |
| TC54VC3402MB | MIC* | SOT-89 | Public marking directory | |
| 3T110AB | — | DO-214AA | Public marking directory | |
| AP131-45TW | — | — | Public marking directory | |
| AP131-45W | — | SOT-23-5L | Public marking directory | |
| AP131-45Y | — | SOT-89-5L | Public marking directory | |
| AX1110R33 | — | SOT-23L 16vl VR1 3b Axl | Public marking directory | |
| BC847AM | — | SOT-883 22ta - 2a PhH | Public marking directory | |
| BZX884-C22 | — | SOD-882 | Public marking directory | |
| ELM9734NAB | — | SOT-89 | Public marking directory | |
| ELM9854AB | — | SOT-89 | Public marking directory | |
| KA4L3M | — | SC-75 | Public marking directory | |
| MMSZ5229 | — | SOD-123 | Public marking directory | |
| MSCD024 | — | 0805 | Public marking directory | |
| R1180Q141C | — | SC-82AB | Public marking directory | |
| R3130N44EC | — | SOT-23 | Public marking directory | |
| RT9809-19CV | — | SOT-23 16vdc VD7 3a Rct | Public marking directory | |
| Si91842DT-28 | — | SOT-23-5 | Public marking directory | |
| TCUDZS5V1B | — | SOD-323F | Public marking directory | |
| XC61CC3402M | — | SOT-23 | Public marking directory | |
| XC61CC3402N | — | SOT-143R | Public marking directory | |
| XC61CC3402P | — | SOT-89 | Public marking directory | |
| XC6221A351N | — | SSOT-24 26vn VR4 5a Tor | Public marking directory | |
| XC6221A351NR | — | SSOT-24 | Public marking directory | |
| XC6223C141NR-G | — | SSOT-24 | Public marking directory | |
| XC6GC3402HR | — | 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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