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CV1758 / 1L4 HF pentode

Size This valve measures 54x17mm overall and has a B7G base.


Filament voltage 1.4V
Filament current 50mA
Max anode voltage 120V
Max screen voltage 100V
Mutual conductance * 1.03mA/V
Anode impedance * 170k ohms
Anode current * 4.5mA
Screen current * 2.0mA
Max cathode current 6.5mA
Cag max 0.01pF
Cae 7.5pF
Cge 3.6pF

*: At Va=Vg2=90V, Vg1=0


Pin Function
1 Filament -ve, suppressor grid, shield
2 Anode
3 Screen grid
4 n/c
5 Filament -ve, suppressor grid, shield
6 Control grid
7 Filament +ve

See also CV2795 which is a selected version of this valve


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