The 4CX5000A is a metal-ceramic, forced air-cooled tetrode with a direct-heating thoriated tungsten cathode. At an operating frequency of 110MHz, the anode dissipation power is 5 kW. Dissipation power for grid No.1 and No.2 is 75w and 250w respectively. The tube is mainly used in high frequency class C amplifier and modulator.

 

Specifications:

Filament Voltage……7.5V

Filament Current……76A

Amplification Factor……4.5

Interelectrode Capacitances (grid-grounded)

Input……115pF         Feedback……0.7pF    Output……20.5Pf

Mounting……Upright

Cooling……forced air

Temperature at anode shell and seals……250℃

 

Maximum ratings:

DC Anode voltage...7.5kV

DC Anode current...3A

Grid 1 voltage……-500V

Grid 1 dissipation……75w

Grid 2 voltage……1500V

Grid 2 dissipation……250w

Anode dissipation power...5kW

 

Typical conditions

DC Anode voltage......5kV

Grid 1 voltage……-500V

Grid 1 dissipation……75w

Grid 2 voltage……1000V

Grid 2 dissipation……250w

Anode Output Power……3.5kW