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CV417 grounded-grid triodes

CV417 This valve measures 53x17mm and has a B7G base

See also CV2009 which is a modified version of this valve. Also see CV4070 which is a reliable version based on CV417.

Heater voltage 6.3V
Heater current 0.3A
Max operating anode voltage 275V
Max anode voltage (Ia=0) 550V
Max anode dissipation 3W
Max mean cathode current 17mA
Mutual conductance 8.5mA/V
Amplification factor 100
Min grid voltage to ensure cut-off slope of 100µA/V -8V
Max heater-cathode voltage 150V
Max grid-cathode voltage 100V
Max operating frequency 250MHz


Pin Function
1 Grid
2 Cathode
3 Heater
4 Heater
5 Cathode
6 Grid
7 Anode



This file was last modified 09:56:37, Thursday April 14, 2022