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CV171 pentode

Size This valve measures 123x45mm overall and has a B4 base.

The CV specification describes CV171 as a Vari-mu tetrode or pentode. The example here is a pentode. The specification states "This valve is standardised for use in certain equipment which can accept these diverse types. It should not, therefore, be used in any new design."

Filament voltage 2V
Filament current 100mA
Max anode voltage 150V
Max screen voltage 60V
Mutual conductance (Va=150, Vg2=60, Vg1=0 to -1V) 1.1mA/V


Pin Function
1 Screen grid
2 Control grid
3 Filament and suppressor grid
4 Filament
TC Anode


This file was last modified 23:10:17, Wednesday February 23, 2022