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Raytheon VT127 beam tetrode

Size This valve measures 128x50mm overall and has a Mazda Octal base.


Heater voltage 4V
Heater current 1.75A
Max anode voltage 330V
Max screen voltage 220V
Max anode dissipation 20W
Max screen dissipation 3W
Mutual conductance (Va=Vg2=100, Vg1=0) 8.5mA/V
Max peak anode voltage 3000V
Cae 22pF
Cge 6pF
Cag 1.25pF


Pin Function
1 Heater
2 Cathode
3 n/c
4 Screen grid
5 Control grid
6 n/c
7 no pin
8 Heater
TC Anode

Donated by Chris Colebrook

This file was last modified 15:08:31, Tuesday September 02, 2014