The EIMAC 3CW40,000A7 is a ceramic/metal power triode designed for use as a high power RF amplifier for industrial and scientific applications. The high-Mu grid in this tube provides excellent isolation and permits stable operation as a grounded grid linear amplifier in class AB or B. With simple cathode bias the tube operates in class C for high efficiency. Its water-cooled anode has a maximum dissipation rating of 40 kilowatts. Class of Operation Characteristics Anode 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) 40,000 Watts --750 Watts 30 MHz 200 Thoriated Tungsten 12.0 Volts 110 Amps Grounded Cathode 79.5 pf 0.27 pf 46.5 pf Grounded Grid 79.5 pf 46.5 pf 0.27 pf Forced Air Coaxial SK-1320 ----12.25 in; 311 mm 6.5 in; 171 mm 17.0 lb; 7.7 kg T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) C RF power amplifier 12,000 9 10,000 --- 6.6 2300 37.5 C RF power amplifier 12,000 9 12,000 --- 7.7 3200 76.0 AB2 RF power amplifier 12,000 9 10,000 --- 8.1 1800 54.0 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 | 3cW40,000A7 CPI | 4CW50,000J 3CW40,000A7