SMD marking code “P1” — 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 | |
|---|---|---|---|---|
| 1PS74SB23 | PHI | SOT-457 | Public marking directory | |
| 1PS74SB23 | PHI | SC-74/SOT457 | Public marking directory | |
| BFG21W | PHI | SOT-343R | Public marking directory | |
| BFP91A | PHI | SOT173 | Public marking directory | |
| BFR92 | PHI | SOT23 | Public marking directory | |
| BFS42 | FERRANTI | SOT-323 | Public marking directory | |
| BZX84C11TS | DIODES | — | Public marking directory | |
| CMOZ16L | CSC CENTRAL SEMIC.CORP. | SOD-523 | Public marking directory | |
| FCX591 | ZETEX | SOT-89 | Public marking directory | |
| HVC131 | OHMITE* | UFP | Public marking directory | |
| R3111Q411A | RICOH* | SC-82AB | Public marking directory | |
| R3116Q381A | RICOH* | SC-82AB | Public marking directory | |
| SGA-9189 | SIRENZA MICRODEVICES | SOT-89 | Public marking directory | |
| SST201 | SILICONIX-VISHAY | SOT-23 | Public marking directory | |
| TC1186-2.5VCT713 | MIC* | SOT-23-5 | Public marking directory | |
| TC54VN4102ECB | MIC* | SOT-23 | Public marking directory | |
| TC54VN4102MB | MIC* | SOT-89 | Public marking directory | |
| 2SK1577-1 | — | SOT-23 16fa - 3a Soy | Public marking directory | |
| BFG121W | — | SOT-343R | Public marking directory | |
| BZX84-C11T | — | SOT-523 | Public marking directory | |
| BZX84-C11TS | — | SOT-363 | Public marking directory | |
| D70Y.8T1 | — | SOT-89 | Public marking directory | |
| ELM7621HCB | — | SOT-23 16vdc VD7 3d Elm | Public marking directory | |
| ELM9721CAB | — | SOT-89 | Public marking directory | |
| HVU131 | — | SOD-123 | Public marking directory | |
| MMSZ5266 | — | SOD-123 | Public marking directory | |
| MMSZ5266B | — | SOD-123 | Public marking directory | |
| R1100D311C | — | — | Public marking directory | |
| R1131D311B | — | — | Public marking directory | |
| R1225N152A | — | SOT-23-6W 33so | Public marking directory | |
| R3130N44HC | — | SOT-23 | Public marking directory | |
| RP104Q281C5 | — | SC-82AB | Public marking directory | |
| RT1P137P | — | SOT-89 | Public marking directory | |
| RT1P141C | — | SC-59 | Public marking directory | |
| RT1P141M | — | SC-70 | Public marking directory | |
| RT1P141T | — | — | Public marking directory | |
| RT1P141U | — | SC-75A | Public marking directory | |
| XC61CN4102M | — | SOT-23 | Public marking directory | |
| XC61CN4102N | — | SOT-143R | Public marking directory | |
| XC61CN4102P | — | SOT-89 | Public marking directory | |
| XC6221B421NR | — | SSOT-24 | Public marking directory | |
| XC6224B09BNR | — | SSOT-24 | Public marking directory | |
| XC6GN4102HR | — | 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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