General Characteristics

Cathode Thoriated tungsten
Heating Direc t
Filament voltage                         4.2 V(1)
Filament current                         146A(1)
Interelectrode capacitances, approx:
cathode-control-grid                               72pF
Control-grid-screen-grid                          93pF
Screen-grid-anode                                 13.2pF
Transconductance(la=2.5A,Ug2=300V) ≥80mA/V
Internal amplification factor,average 8
Operating position Vertical,anode up
weight, approx .                                   4.1Kg
Dimensions See page                           95
Anode cooling(2) Hypervapotron
Air flow ,min.                                         15l/min
Pressuer at water inlet,max.                 5105Pa
Temperature at air water outlet, max.  80℃
Cooling at the sealing between electrode terminal and ceramic, Forced air
Temperature on the surface of the tube,max. 300℃