3CX400A7

cpi | 3 cx400a7/ 8874 cpi | 4cW50,000J 3cx400a7/8874 The 3CX400A7/8874 is a compact high-mu power triode intended for use in zero bias Class B amplifiers in audio or RF applications. Operation with zero bias simplifies circuitry and cathode driven operation is attractive since a power gain as high as twenty can be obtained. 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 400 Watts --5 Watts 500 MHz 240 Oxide Coated 6.3 Volts 3.0 Amps Grounded Grid 20.5 pf 6.0 pf 0.3 pf ----- pf --- pf --- pf Forced Air 11 pin with ring SK-1900 SK-606 --2.14 in; 54.40 mm 1.64 in; 41.70 mm 4.3 oz; 122 gm type of service MaxiMuM Ratings plate Voltage (Volts) 2,200 2,200 2,200 4,500 plate current (amps) 0.35 0.35 0.35 6.0 ypical OpeRatiOn t plate current (amps) 0.50 0.40 0.50 --- Drive Output power power (Watts) (kiloWatts) 26 17.5 27 --- 0.587 0.526 0.505 --- class of Operation aB2 aB2 aB2 --- plate screen Voltage Voltage (Volts) (Volts) 2,000 2,000 2,000 --- --- --- --- --- cathode driven RF linear amplifier (30 MHz) cathode driven RF linear amplifier (150 MHz) cathode driven RF linear amplifier (432 MHz) pulse modulator or regulator 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 : powergrid@cpii.com