The 3CX3000F7/8162 high-mu forced air cooled power triode provides relatively high power output as an amplifier, oscillator, or modulator at low plate voltages. The tube has a low inductance cylindrical filament tank circuit for VHF operation. Operation with zero grid bias in many applications offers circuit simplicity by eliminating the bias supply. Grounded-grid operation is attractive since a power gain of over twenty times can be obtained. The 3CX3000F7/8162 tube is identical to the 3CX3000A7 except for the addition of flexible leads on the base for grid and filament connections which can simplify socketing in low frequency applications 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 4,000 Watts --225 Watts 30 MHz 160 Thoriated Tungsten 7.5 Volts 51.5 Amps Grounded Cathode 38.0 pf 0.6 pf 24 pf Grounded Grid 38 pf 24.0 pf 0.6 pf Forced Air Air Socket --- Air Chimney Boiler Length Diameter Weight ----18.437 in; 468.30 mm 4.15 in; 105.50 mm 7.0 lb; 3.2 kg Special with Flying leads Maximum RatingsTypical Operation Class of Type of ServicePlate PlatePlateScreenPlate Drive Output Operation VoltageCurrent Voltage VoltageCurrent PowerPower (Volts)(Amps) (Volts) (Volts)(Amps)(Watts) (kiloWatts) CCathode Driven RF amplifier AB2 RF Linear Amplifier 5,000 2.5 4,800 --- 1.5 435 5.5 5,000 2.5 4,800 --- 2.0 410 7.26 AB2Grid Driven RF Linear Amplifier AM Service 5,000 2.5 4,000 --- 0.74 115 1.13 AB2Grid Driven AF Amplifier or Modulator 5,000 2.5 4,000 --- 3.6 115 10.5 15,000 2.5 13,700 --- 0.53 --- --- DSwitching Modulator 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 MPP products, visit our website at: www.cpii.com, or contact: CPI Microwave Products Division, Eimac Operation, 607 Hansen Way, Palo Alto, CA 94303 telephone: 1(800) 414-8823. fax : (650) 592-9988 | email : [email protected] CPI | 3CX3000F7 4CW50,000J/ 8162 3CX3000F7 / 8162