Tube Substitutions for:
3Z4
Pentode Power Amplifier
| Type | Substitutes | Base Diagram |
|---|---|---|
| 3Z4 | 3W4, 3Q4, 3S4*, 3S4SF, 3Q4*§ |  |
| Notes: | * - Parallel filaments § - May not work in all circuits | |
| Web References | 3Z4 (EIAJ) @ Franks Electron Tubes | |
Pentode Power Amplifier
MECHANICAL DATA
| Basing | 7BA |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 2.8 | Volts |
| Heater Current | .025 | A |