The 4PR60C/8252W is intended for pulse modulator service in circuits employing inductive or resistive loads. This tube unilaterally replaces the 715C, the 5D21 and the 4PR60B/8252. The internal structure of the tube has been strengthened to minimize the effects of shock and vibration. The 4PR60C/8252W has a maximum plate dissipation rating of 60 watts, and is cooled by radiation and convection, and delivers pulse output power in the region of 300 kW with less than one kW of pulse driving power. 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 60 Watts 8 Watts 1 Watts N/A N/A Oxide Coated 26.0 Volts 2.1 Amps Grounded Cathode 43.0 pf 8.5 pf 1.5 pf N/A N/A N/A N/A Radiation and Forced Air 4-Pin Special N/A N/A N/A 6.00 in; 152.40 mm 3.06 in; 77.90 mm 12 oz; 0.34 kg Maximum RatingsTypical Operation Class of Type of ServicePlate PlatePlateScreenPlate Operation VoltageCurrent Voltage VoltageCurrent (Volts) (Amps) (Volts) (Volts) (Amps) ---Switch Tube or PUlse Modulator 20,000 18.0 20 000 1,250 18.0 Drive Output PowerPower (Watts) (kiloWatts) --- 337.0 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 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 | 4PR60C / 8252W 4CW50,000J 4PR60C / 8252W