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TIP121 STMicroelectronics | STMicroelectronics TIP121 NPN Darlington Transistor, 5 A 80 V HFE:1000, 3-Pin TO-220 | 485-9660 | RS Components
TIP 121, Tube TIP121; Röhre TIP 121 ID40240, Transistor | Radiomuseum.org
TIP121 NPN Power Darlington Transistor - Datasheet