SMD marking code “1D” — 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 | |
|---|---|---|---|---|
| BC846 | PHI | SOT-23 | Public marking directory | |
| BC846W | NXP | SOT-323 16ta - 3a PhH | Public marking directory | |
| BU4344F | ROHM* | SOP-4 | Public marking directory | |
| BU4344FWE | ROHM* | VSOF-5 | Public marking directory | |
| BU4344G | ROHM* | SSOP-5 | Public marking directory | |
| IRLML5103 | IR | SOT-23 | Public marking directory | |
| KST42 | FSC | SOT-23 | Public marking directory | |
| MA2J113 | PANASONIC* | SOT-346 | Public marking directory | |
| MM5Z56V | FSC | SOD-523 | Public marking directory | |
| MMBTA42 | KEC AMERICA (USD) | SOT-23 | Public marking directory | |
| MMBTA43 | MCC | SOT-23 | Public marking directory | |
| R3111N311A | RICOH* | SOT-23-5 | Public marking directory | |
| RH5RL41AA | RICOH* | SOT-89 | Public marking directory | |
| RN5RL41AA | RICOH* | SOT-23-5 | Public marking directory | |
| RN5VD31CA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW17BA | RICOH* | SOT-143R | Public marking directory | |
| SMBTA20 | SIEMENS | SOT-23 16ta - 3g Vs | Public marking directory | |
| SMBTA42 | INFINEON | SOT-23 16ta - 3a Inf | Public marking directory | |
| SXTA42 | INFINEON | SOT-89 | Public marking directory | |
| TMPTA42 | VISHAY SPRAGUE | SOT-23 | Public marking directory | |
| MBTA42 | — | SOT-23 | Public marking directory | |
| MM3Z2V7 | — | SOD-323 | Public marking directory | |
| MM3Z56V | — | SOD-323 | Public marking directory | |
| MMBTA42L | — | SOT-23 | Public marking directory | |
| R1161D311A | — | — | Public marking directory | |
| R3131N41EC | — | SOT-23 | Public marking directory | |
| R3132Q23EA | — | SOT-143 | Public marking directory | |
| R5326N004A | — | SOT-23-6 | Public marking directory | |
| XC6127N21BNR | — | SSOT-24 | Public marking directory | |
| XC6213B13ANR | — | SSOT-24 | Public marking directory | |
| XC6217C142NR | — | SSOT-24 | Public marking directory | |
| ZD56V0 | — | SOD-322 | 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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