SMD marking code “CO” — 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 | |
|---|---|---|---|---|
| 2SC2881-O | TOS | SOT-89 | Public marking directory | |
| 2SC4209-O | TOS | SC-59 16ta - 3a Tos | Public marking directory | |
| 2SC5087-O | TOS | SMQ | Public marking directory | |
| 2SC5343E-O | TOS* | SOT-523 16ta - 3a Auk | Public marking directory | |
| 2SC5343EF-O | TOS* | SOT-523F | Public marking directory | |
| MAX6314US50D2-T | MAX* | SOT-143 | Public marking directory | |
| 2SA1980U-O | — | SOT-323 16ta - 3a Auk | Public marking directory | |
| 2SA1980UF-O | — | SOT-323F 18ta - 3a Auk | Public marking directory | |
| AP130-29TW | — | — | Public marking directory | |
| AP130-29W | — | SOT-23 | Public marking directory | |
| AP130-29Y | — | SOT-89 | Public marking directory | |
| GS6332UR23D3 | — | SOT-23 | Public marking directory | |
| KTC4373-O | — | SOT-89 | Public marking directory | |
| SiP6332R23D3 | — | SOT-23 | Public marking directory | |
| V6301OSP5B | — | 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.
Can't match your marking?
Send us the code, package and a photo — our team helps identify the part.
Ask our team