Virtual Valve Museum
Virtual Valve Museum | Search: (use * for wildcard)
About the museumMuseum exhibitsSupportersDocumentsLinks to other sites, suppliers etc.

CV3888 / ECH42 triode/hexode

Size This valve measures 60x21mm overall and has an 8 pin base.

This valve is intended for use as a frequency changer or phase inverter.

Heater voltage 6.3V
Heater current 230mA
Max heater-cathode voltage 100V
Hexode section
Max anode voltage (Ia=0) 550V
Max anode voltage 300V
Max anode dissipation 1.5W
Max G2+G4 voltage (Ig2,g4=0) 550V
Max G2+G4 voltage 300V
Max G2+G4 dissipation 300mW
Control grid voltage (Ig1=0.3µA) -1.3V
Max cathode current 10mA
Triode section
Max anode voltage (Ia=0) 550V
Max anode voltage 175V
Max anode dissipation 800mW
Control grid voltage (Ig=0.3µA) -1.3V
Cathode current 6mA


Pin Function
1 Heater
2 Hexode anode
3 Triode anode
4 Triode grid+hexode G3
5 Hexode G2+G4
6 Hexode G1
7 Cathode + shield
8 Heater

This file was last modified 23:10:27, Wednesday February 23, 2022