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Marking of electronic components, SMD Codes R21, R21**. TK11221UM, FJV3101R, TK11121CS, TK11221CM, R5510H021M, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| TK11221UM | R21 | SOT89-5 | |
| FJV3101R | R21 | SOT-23 | |
| TK11121CS | R21 | SOT23-5 | |
| TK11221CM | R21 | SOT23L-6 | |
| R5510H021M | R21Mxx | SOT-89-5 | |
| LM4120AIM5X-1.8 | R21A | MF05A | |
| LM4120AIM5-1.8 | R21A | SOT23-5 | |
| LM4120IM5X-1.8 | R21B | NS | SOT23-5 |
| LM4120IM5-1.8 | R21B | SOT23-5 |