Triodes 3CPX800A7

Product catalog summary

Overview: The document provides technical specifications and operational details for the 3CPX800A7, a high-mu power triode designed for use in zero bias Class B amplifiers in pulsed radio frequency applications. It is also suitable for use as a pulse modulator or regulator and in FM broadcast services.

Specifications:

Maximum Ratings: The triode can operate at a maximum plate voltage of 3,500 to 4,500 volts and a plate current of 8.0 amps. It delivers a peak output power of 6 kW in drive-pulsed RF service and 900W in FM broadcast service at 108MHz.
Plate Dissipation: Maximum of 800 Watts.
Grid Dissipation: Maximum of 4 Watts.
Frequency for Max. Rating (CW): 350 MHz.
Amplification Factor: 200.
Filament/Cathode: Oxide Coated with a voltage of 13.5 Volts and current of 1.5 Amps.
Capacitance (Grounded Grid): Input 26.0 pf, Output 6.1 pf, Feedthrough 0.5 pf.
Cooling: Forced Air.
Physical Dimensions: Length 2.52 in (64.01 mm), Diameter 2.53 in (64.26 mm), Weight 12 oz (340 gm).

Operational Classes:

Class AB2: Used in cathode-driven RF linear amplifiers, pulsed operation with a typical plate voltage of 3,500 volts and a plate current of 2.5 amps.
Pulse Modulator/Regulator: Operates at a plate voltage of 4,500 volts and a plate current of 5.0 amps.
Class AB: Grounded-grid operation for FM Broadcast with a typical plate voltage of 3,200 volts and a plate current of 0.43 amps.

Contact Information: For more information, visit the CPI website or contact the CPI MPP Division, Eimac Operations in Palo Alto, CA.

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