SMD marking code “8B” — 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 | |
|---|---|---|---|---|
| 2DA1774R | DIODES | SOT-523 | Public marking directory | |
| 2DA1774S | DIODES | — | Public marking directory | |
| DTC124EE | ROHM | SC-75 | Public marking directory | |
| MMBZ5227B | FSC | SOT-23 | Public marking directory | |
| MUN2212 | MOT | SC-59 | Public marking directory | |
| MUN5212 | MOT | SOT-323 | Public marking directory | |
| NJM78L03A | NJR NEW-JAPAN-RADIO | SOT89 | Public marking directory | |
| NJM78L03UA | NJR* | SOT-89 | Public marking directory | |
| R3111N181A | RICOH* | SOT-23-5 | Public marking directory | |
| RH5RL28AA | RICOH* | SOT-89 | Public marking directory | |
| RN5RL28AA | RICOH* | SOT-23-5 | Public marking directory | |
| RQ5RW31BA | RICOH* | SOT-143R | Public marking directory | |
| UNR2212 | PANASONIC* | SC-59 | Public marking directory | |
| UNR5212 | PANASONIC* | SOT-523 | Public marking directory | |
| UNR9212J | PANASONIC | SC-89 | Public marking directory | |
| HA178L05UA | — | SOT-89 | Public marking directory | |
| HMBZ5227B | — | SOT-23 | Public marking directory | |
| KIA78L06F | — | SOT-89 | Public marking directory | |
| R1161D181A | — | — | Public marking directory | |
| R3131N28EC | — | SOT-23 | Public marking directory | |
| R3132Q41EC | — | SOT-143 | Public marking directory | |
| RN5VD18CA | — | SOT-23-5 | Public marking directory | |
| UN2212 | — | SC-59 | Public marking directory | |
| UN5212 | — | SOT-523 | Public marking directory | |
| UN9212J | — | SC-89 | Public marking directory | |
| XC6127C17DNR | — | SSOT-24 | Public marking directory | |
| XC6127N17JNR | — | SSOT-24 | Public marking directory | |
| XC6223A21BNR-G | — | SSOT-24 | Public marking directory | |
| ZD5227BN3 | — | SOT-23 | 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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