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CV3612 / 5686 pentode

Size This valve measures 54x20mm overall and has a B9A base.

This valve is designed for dependable operation under service conditions encountered in mobile and aircraft use. It is suitable for use as a Class A audio amplifier or Class C RF amplifier up to 160MHz.

Heater voltage 6.3V
Heater current 350mA
Typical operation class A1
Anode voltage 250V
Screen voltage 250V
Control grid voltage -12.5V
Transconductance 3100 micromhos
Anode current (no signal) 27mA
Screen current (no signal) 5.0mA
Load resistance 9000 ohms
Power output 2.7W
Typical operation class C RF amp up to 160MHz
Anode voltage 250V
Screen voltage 180 to 250V
Control grid voltage -30 to -50V
Peak control grid RF voltage 50 to 75V
Anode current 30 to 40mA
Screen current 6.5 to 10.5mA
Control grid current 2.0mA
RF grid driving power 0.10 to 0.15W
Power output 5.0 to 6.5W
Useful power output at 125MHz 5.25W


Pin Function
1 Cathode and suppressor grid
2 Control grid
3 Cathode and suppressor grid
4 Heater
5 Heater
6 Suppressor grid
7 Anode
8 Cathode and suppressor grid
9 Screen grid
CV3612 / 5686

This file was last modified 23:10:26, Wednesday February 23, 2022