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CV2220 / CVX2220 / 5B/257M beam tetrode

Size
This valve measures 89x30mm overall and has a B8G base

Heater voltage12V
Heater current470mA
Max anode voltage600V
Max screen voltage300V
Max anode current120mA
Max anode dissipation25W
Max screen dissipation4.5W
Mutual conductance *6.0mA/V
Inner µ *9.0
Max frequency for above ratings60MHz
Capacitances
Cag0.13pF
Cge12pF
Cae8.5pF

*: At Va=300, Vg2=250, Ia=72mA
PinFunction
1Heater
2Anode
3Screen grid
4Cathode + beam plates
5Control grid
6Control grid
7Cathode + beam plates
8Heater

CV2220
Above: CV2220; below: CVX2220. Both are also marked 5B/257M
CVX2220

This file was last modified16:00:28, Tuesday September 02, 2014