SMD marking code “33B” — 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 | |
|---|---|---|---|---|
| XC6203E422FR | TOREX* | SOT-223 | Public marking directory | |
| XC6203E422MR | TOREX* | SOT-23 | Public marking directory | |
| XC6203E422PR | TOREX* | SOT-89 | Public marking directory | |
| AAT60033B-S15 | — | SOT-143 | Public marking directory | |
| AAT60033B-S16 | — | SOT-89 | Public marking directory | |
| AAT60033B-S2 | — | SOT-23 16vdb VD7 3d Aat | Public marking directory | |
| BZX84C33-V | — | SOT-23 16dc - 3f Kec | Public marking directory | |
| MMBZ5233BPT | — | SOT-23 16dc - 3a Chm | Public marking directory | |
| PTZ33B | — | SOD-106 | Public marking directory | |
| R1163N311E | — | SOT-23-5 | Public marking directory | |
| XC6104A442MR | — | SOT-23-5 | 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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