| Type | Substitutes | Base Diagram |
|---|---|---|
| 7717 | 6CY5, 6EA5, 6EV5, 6AG5*§, 6AK5*§, 6BC5*§, 6CE5*§, 6HS6*§, 8113 | 7EW |
| Notes: | * - Parallel filaments § - May not work in all circuits | |
| Web References | 7717 (RCA (HB3)) @ Franks Electron Tubes 7717 @ RadioMuseum.org | |
| Basing | 7EW |
| Heater Voltage | 6.3 | Volts |
| Heater Current | 0.2 | A |