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Marking of electronic components, SMD Codes R21B, R21B**. LM4120IM5X-1.8, LM4120IM5-1.8, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| LM4120IM5X-1.8 | R21B | NS | SOT23-5 |
| LM4120IM5-1.8 | R21B | SOT23-5 |