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NT20 triode

Size This valve measures 122x45mm overall and has a 4 pin base.


Filament voltage 6V
Filament current 250mA
Max anode voltage 250V
Amplification factor * 6
Mutual conductance * 3.2mA/V min
Anode impedance * 2k ohms
Average anode current * 55mA
Cga max 9pF

*: At Va=150, Vg=0.

Pin Function
1 Anode
2 Grid
3 Filament
4 Filament



This file was last modified 15:38:20, Tuesday September 02, 2014