The 3CW20,000H7 is a high-mu power triode intended for use as a dc voltage or current regulator, or in a high voltage switch tube or pulsed regulator service. In addition, since the tube is identical to the 3CW20,000A7 except for the anode and grid flanges and the addition of the filament flying leads, it is useful as a zero bias Class B amplifier in audio or RF applications. 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) 20,000 Watts --500 Watts 110 MHz 200 Thoriated Tungsten 7.5 Volts 99.0 Amps Grounded Cathode 59.0 pf 0.2 pf 36 pf ----- pf --- pf --- pf Water and Forced Air Flexible Filament Leads ------20.70 in; 525.80 mm 6.75 in; 171.40 mm 12.0 lb; 5.5 kg T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) AB Cathode driven RF linear amplifier 7,000 5.0 7,000 --- 5.0 1,540 24.0 AB Cathode driven RF linear amplifier (AM service) 7,000 5.0 7,000 --- 2.4 330 5.65 AB Grid driven AF amplifier or modulator 7,000 5.0 7,000 --- 10.0 560 47.0 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 | 3cW20,000H7 CPI | 4CW50,000J 3CW20,000H7