The 3CW20,000H7 is a high-performance ceramic/metal, water cooled power triode designed for use in zero-bias class B RF, audio amplifier,DC voltage or current regulator, or high voltage pulsed or switch tube service.A modern mesh filament is used, replacing the old-fashioned hairpin construction.The improved mesh filament design ensures better mechanical rigidity and long lasting concentricity of the filament, providing enhanced linearity, less noise,reduced warm-up variation and longer life. The low-inductance, mesh-filament basket also forms a natural extension of the cylindrical stem geometry into the active area, giving superior VHF performance to 200MHz. The anode and grid flanges provide ease of mounting regardless of application.
GENERAL CHARACTERISTICS
Electrical
Filament Thoriated-tungsten mesh |
|
Voltage |
7.50 ±0.37V |
Current @ 7.50V |
100A |
Amplification factor (average) |
200 |
Direct interelectrode capacitances: |
|
Grid to filament |
59.0pF |
Grid to anode |
36.0pF |
Filament to anode |
0.2pF |
Maximum frequency for full ratings (CW) |
200 MHz |
Mechanical
Cooling |
Water and forced air |
Base |
Grid contact flange and flying leads |
Operating position |
Vertical, Anode up or down |
Maximum operating temperature |
250° C |
Maximum dimensions: |
|
Length |
285 mm (11.22 in.) |
Diameter |
119.4 mm (4.7in.) |
Net weight |
5.45 kg (12 lb) |