The 4CW25,000A is a tetrode intended for use in audio or radio frequency applications. It is recommended for RF linear power amplifier service for television linear amplifier service, and as a switch tube for pulsed regulator service. Class of Operation Characteristics Plate Dissipation (Max.) Screen Dissipation (Max.) Grid Dissipation (Max.) Frequency for Max. rating (CW) Amplification Factor Filament/Cathode Voltage Current Capacitance Input Output Feedthrough Capacitance Input Output Feedthrough Cooling Base Air Socket Air Chimney Boiler Length Diameter Weight Maximum Ratings Type of Service Plate Voltage (Volts) Plate Current (Amps) 25,000 Watts 450 Watts 20 Watts 110 MHz 4.5 Thoriated Tungsten 6.3 Volts 160 Amps Grounded Cathode 160 pf 24.5 pf 1.5 pf Grounded Grid 67 pf 25.5 pf 0.2 pf Water and Forced Air Special Coaxial SK-300A ----12.69 in; 322.00 mm 4.75 in; 121.00 mm 13.5 lb; 6.1 kg T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) C RF amplifier 10,000 5.0 10,000 750 4.5 220 36.5 C RF amplifier plate modulated 8,000 4.0 8,000 750 3.6 150 23.5 AB1 RF linear amplifier 10,000 6.0 10,000 1,500 4.2 --- 28.5 AB1 AF amplifier or modulator 10,000 6.0 10,000 1,500 8.5 --- 57.0 The values listed above represent specified limits for the product and are subject to change. The data should be used for basic information only. Formal, controlled specifications may be obtained from CPI for use in equipment design. For information on this and other CPI products, visit our website at: www.cpii.com, or contact: CPI MPP Division, Eimac Operations, 607 Hansen Way, Palo Alto, CA 94303 telephone : 1(800) 414-8823. fax : (650) 592-9988 | email : [email protected] CPI | 4CW25,000A CPI | 4CW50,000J 4CW25,000A