RF Power Triode FU1608C, equivalent to BW1608J2F
FU1608C / BW1608J2F is a water cooled, metal /
Ceramic power triode. It uses a thoriated
Tungsten filament and a coaxial structure,
Intended for use in industrial radio frequency
Heating as oscillator. Max. Frequency:
30MHz, max plate dissipation: 50KW.
Output power (class C oscillator, less
Driver): 118 kw
ABRIDGED DATA
Two RF power triodes of coaxial
Ceramic/metal construction, intended
Primarily for industrial service. They differ
only in the method of anode cooling and
Anode dissipation.
Anode cooling...Water; Integral

Jacket
Anode dissipation...50 kWmax
Anode voltage...13 kVmax
Frequency for full ratings...30 MHzmax
Output power (class C oscillator,
Less drive)...118 kW
GENERAL Electrical
Filament...Thoriated tungsten
Filament voltage...^^12 V
Filament current...178 A
Surge filament current (peak). 890 Amax
Filament cold resistance...8.0 mO
Peak usable cathode current...70 A
Amplification factor
(Va = 10 kV, Ia=5.0A)...40
Mutual conductance
(Va = 10 kV, Ia=5.0A)...80 mA/V

Inter-electrode capacitances:
Grid to anode...47 pF
Grid to filament...126 pF
Anode to filament...2.0 pF
Mechanical
Overall dimensions...Seeoutline drawings
Net weight...12Kg approx
Mounting position...Vertical, either way up