The 3CX1500A7/8877 power triode is designed for use as a cathode driven Class AB2 or Class B amplifier, in audio or RF applications including the VHF band or as a cathode driven plate modulator Class C RF amplifier. As a linear amplifier, high power gain may be obtained without sacrifice of low intermodulation and high amplification factor combine to make drive requirements exceptionally low for a tube of this power capacity.


Characteristics

Plate Dissipation (Max.) 1,500 Watts
Screen Dissipation (Max.) --- Watts
Grid Dissipation (Max.) 25 Watts
Frequency for Max. rating (CW) 250 MHz
Amplification Factor 200
Filament/Cathode Oxide Coated

    Voltage
    Current

 5.0 Volts
10.5 Amps
Capacitance Grounded Cathode

    Input
    Output
    Feedthrough

 38.5 pf
0.1 pf
10. pf
Capacitance Grounded Grid

    Input
    Output
    Feedthrough

 38.5 pf
10.2 pf
0.1 pf
Cooling Forced Air
Base Special 7-pin
Air Socket SK-2210
Air Chimney SK-2216
Boiler ---
Length 4.02 in; 102.20 mm
Diameter 3.38 in; 85.80 mm
Weight 1.6 lb; 0.7 kg


Maximum Ratings Typical Operation
Class
of
Operation		 Type of Service Plate Voltage (Volts) Plate current (Amps) Plate Voltage (Volts) Screen Voltage (Volts) Plate Current (Amps) Drive Power (Watts) Output Power (kiloWatts)
C Cathode Driven RF Amplifier Plate Modulated 3,200 0.8 2,400 --- 0.60 41 1.0
at 30 MHz
B Cathode Driven RF Linear Amplifier at 108 MHz 4,000 1.0 4,000 --- 1.0 78 2.6
AB2 Cathode Driven RF Linear Amplifier at 220 MHz 4,000 1.0 2,500 --- 1.0 57 1.52
AB2 Cathode Driven RF Linear Amplifier at 30 MHz 4,000 1.0 3,500 --- 1.0 64 2.075

Characteristics and Operating values are based on performance tests. Figures may change without notice as the result of additional data or product refinement. Penta Laboratories should be consulted before using this information for final equipment design.