SMD marking code “A1” — 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 | |
|---|---|---|---|---|
| 1SS272 | TOS | SOT-143 | Public marking directory | |
| 1SS308 | TOS | SOT-23-5 | Public marking directory | |
| 1SS382 | TOS | SOT-343 | Public marking directory | |
| BA591 | PHI | SOD-323 | Public marking directory | |
| BAW56 | FSC | SOT-23 | Public marking directory | |
| BAW56T | PHI | SC-75 | Public marking directory | |
| BAW56T | PHI | SC-75/SOT416 | Public marking directory | |
| BAW56W | PHI | SOT-323 | Public marking directory | |
| BAW56W | PHI | SC-70/SOT323 | Public marking directory | |
| HSMS-2801 | HP | — | Public marking directory | |
| MC2831 | MOT* | SC-59 | Public marking directory | |
| MMSZ10 | ON* | SOD-123 | Public marking directory | |
| R3114Q081A | RICOH* | SC-82AB | Public marking directory | |
| TC1014-2.5VRX | MIC* | SOT-23-5 | Public marking directory | |
| 2SJ243 | — | SC-70 | Public marking directory | |
| BAS240 | — | SOD-110 | Public marking directory | |
| BAW56L | — | SOT-23 | Public marking directory | |
| BAW56PT | — | SOT-23 16df - 3a Chm | Public marking directory | |
| BAW56TPT | — | SOT-416 16df - 3a Chm | Public marking directory | |
| BGA2001 | — | SOT-143 | Public marking directory | |
| BZX884-B2V4 | — | SOD-882 | Public marking directory | |
| CHP202KPT | — | SC-59 16df - 3a Chm | Public marking directory | |
| CHP222PT | — | SOT-416 16df - 3a Chm | Public marking directory | |
| D70G.05T1 | — | SOT-89 | Public marking directory | |
| DSE015 | — | MCP 16eb - 3a San | Public marking directory | |
| ELM9821AB | — | SOT-89 | Public marking directory | |
| FSS12 | — | DO-214AC | Public marking directory | |
| HVC300B | — | UFP | Public marking directory | |
| K1/A2 | — | — | Public marking directory | |
| MC2841 | — | SC-70 | Public marking directory | |
| R1111N211A | — | SOT-23-5 | Public marking directory | |
| RT9161-17CV | — | SOT-23 | Public marking directory | |
| RT9818C-22CU3 | — | SOT-323 16vdc VD6 3a Rct | Public marking directory | |
| Si2301DS | — | SOT-23 | Public marking directory | |
| XC6224A091NR | — | SSOT-24 | 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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