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STC 4104D triode

This valve measures 107x55mm overall and has a 4 pin base. 

The markings on the base of this valve are: STC, SY4104D, Australia.

Filament current 0.97A
Nominal filament voltage 4.4V
Max anode voltage 160V
Max anode dissipation 5W
Mutual conductance * 1.15mA/V
Amplification factor * 2.3
Anode impedance * 2000 ohms
Cag 5.9pF
Caf 3.7pF
Cgf 5.2pF

*: At Ia=20mA

Pin Function
1 Filament
2 Anode
3 Grid
4 Filament


Donated by The Geelong Radio & Electronics Society Inc.

This file was last modified 15:18:44, Tuesday September 02, 2014