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STC 3A/109B / CV1663 triode

Size This valve measures 115x45mm overall and has a 4 pin base.


Nominal filament voltage 4.0V
Filament current 250mA
Max anode voltage 160V
Mutual conductance * 3.0mA/V
Amplification factor * 6
Anode impedance * 2000 ohms
Cag max 10.0pF
Cge mac 9.0pF
Cae max 5.0pF

*: At Va=130V, Vg=-8V

Pin Function
1 Anode
2 Grid
3 Filament -
4 Filament +

This file was last modified 15:06:51, Tuesday September 02, 2014