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Marking of electronic components, SMD Codes RT21EI, RT21EI**. TRSF3221EIDB, TRSF3221EIPW, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| TRSF3221EIDB | RT21EI | SSOP-16 | |
| TRSF3221EIPW | RT21EI | TSSOP-16 |