The 3CX1200D7/YU-121 is a high-mu, forced air cooled, rugged, ceramic/metal power triode intended for use as a grounded grid, zero bias class AB2 amplifier. Class of Operation AB 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) RF linear amplifier 5,500 0.8 T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) 4,000 1,200 Watts --50 Watts 110 MHz 200 Thoriated Tungsten 6.3 Volts 25.0 Amps Grounded Cathode 17.6 pf 0.57 pf 9.7 pf ----- pf --- pf --- pf Forced Air 5 Pin Special SK-410 SK-446 --5.0 in; 12.7 cm 3.5 in; 8.9 cm 2.36 lb ; 1.07 kg --- Plate Current (Amps) .562 Drive Output Power Power (Watts) (kiloWatts) 53 1.6 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 | 3cX1200D7/ YU-121 CPI | 4CW50,000J 3CX1200D7/YU-121