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CV3991 tetrode

Size
This valve measures 56x40mm overall and has a B8F base

Heater voltage26.5V
Heater current560mA
Max negative control grid voltage-250V
Max input control grid2W
Max heater-cathode voltage±150V
Max anode core temperature250°C
Max anode seal temperature200°C
Max base seal temperature175°C
Max altitude10,000 feet
Min cathode heating time30s
Max anode voltage2kV
Max anode dissipation250W
Max anode input500W


The valve needs forced-air cooling. See the specs for 4X150D for more information on this valve.
PinFunction
1Screen grid
2Cathode
3Heater
4Cathode
5i/c
6Cathode
7Heater
8Cathode
Centre pinControl grid
Cooling finAnode

CV3991

Donated by John Kaesehagen

This file was last modified15:54:49, Tuesday September 02, 2014