The 3CX30000H7 is a water cooled, ceramic-metal hign-mu amplifier factor triode containing a thoriated tungsten carbide cathode which is designed for mainly used as a zero-bias RF amplifier in Class B, power amplifier or oscillator in Class C and voltage modulator.

GENERAL  CHARACTERISTICS
Filament Voltage                    6.3  V
Filament Current                    160  A
Interelectrode Capacitance (Grouded Cathode)
Cin                             61  pF
Cout                           0.2  pF 
Cgp                            36  pF
Interelectrode Capacitance (Grouded Grid)
Cin                             61  pF
Cout                           36  pF 
Cak                            0.2  pF
Amplification  Factor            200
Operation Position                 Vertical, base up or down
Cooling 
Anode                                             Water
Stem                                               Forced Air
Water Capacity                             50 L/min
Air Capacity                                   60 m3/h
Maximum  Seal Temperature            250
Maximum Electrode Flexible Lead Temperature  175℃
Maximum Height                    524 mm
Maximum Diameter               171 mm
Appro.Net Weight                  5.5 kg