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Introduction:
1. FU-4075F electron tube is a direct-heated thorium-tungsten cathode with a metal-ceramic structure and a forced air-cooled tetrode. Maximum operating frequency 220MHZ, maximum anode dissipation power 7.5Kw
2. This tube is mainly used for high frequency class C amplification and modulation.
3. It can be used interchangeably with imported 4CX7500A electronic tubes.
Characteristic parameter
Filament Voltage………7.0 V
Filament Current……114 A
Amplification Factor ……8
Interelectrode Capacitances(Grounded Grid)
Input……………………… 74.1pF
Grid-Plate………………… 0.07pF
Output……………………… 20.6pF
Weight…………………………3.8kg
Maximum working temperature of anode shell and sealing……250℃
Maximum Length………217mm
Maximum Diameter…142.6mmInstallation method…………………… Vertical downward installation
Cooling method………………………… Forced air cooling
Extreme use data
Plate Voltage……………8kV
Plate Current……………3 A
Plate Dissipation…7.5kW
Grid Dissipation…50W
Screen Dissipation…150 W
Typical working state
Plate Voltage…………6.45 kV
Plate Current……………2.2 A
Screen Voltage……………650 V
Driving Power……………240 W
Maximum Plate Dissipation……………7.5kW
Output Power…………13.6KW