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Marking of electronic components, SMD Codes RS21EI, RS21EI**. TRS3221EIDB, TRS3221EIPW, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| TRS3221EIDB | RS21EI | SSOP-16 | |
| TRS3221EIPW | RS21EI | TSSOP-16 |