SMD marking code “Y4” — 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 | |
|---|---|---|---|---|
| BZT52C16 | MCC | SOD-123 | Public marking directory | |
| BZV49-C15 | PHI | SOT-89 | Public marking directory | |
| BZV49C15 | ZETEX | SOT89 | Public marking directory | |
| BZX84-A15 | PHI | SOT-23 | Public marking directory | |
| BZX84-B15 | PHI | SOT-23 | Public marking directory | |
| BZX84-C15 | PHI | SOT23 | Public marking directory | |
| CMDZ5256B | CSC CENTRAL SEMIC.CORP.* | SOD-323 | Public marking directory | |
| MM5Z15V | FSC | SOD-523 | Public marking directory | |
| MMSZ36 | ON* | SOD-123 | Public marking directory | |
| MMSZ5239B | FSC | SOD-123 | Public marking directory | |
| R3111Q541C | RICOH* | SC-82AB | Public marking directory | |
| R5325N004A | RICOH* | SOT-23-6 | Public marking directory | |
| RN2132F | TOS | SOT-490 | Public marking directory | |
| BZT52-C15T | — | SOD-523 | Public marking directory | |
| BZX84-C15-V | — | SOT-23 | Public marking directory | |
| BZX88-C15 | — | SOT-323 | Public marking directory | |
| ECG5024SM | — | SOT-23 | Public marking directory | |
| ELM7644LBB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| KA4A4Z | — | SC-75 | Public marking directory | |
| NTE5024SM | — | SOT-23 | Public marking directory | |
| R1163D341D | — | — | Public marking directory | |
| R1210N542C | — | SOT-23-5 | Public marking directory | |
| XC6223H14BNR-G | — | SSOT-24 | Public marking directory | |
| ZD5240BSG | — | SOD-323-S | 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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