Electron tube 4CX250B is forced-air cooled, 250-watt plate dissipation,external anode, and ceramic and metal radial beam tetrode The electron tube 4CX250B/7203 is a forced-air cooled, 250-watt plate dissipation, external anode, and ceramic and metal radial beam tetrode. The superior construction of the 4CX250B makes it ideal for use as a grid driven RF amplifier or oscillator, or an AF power amplifier or

modulator. It is designed to operate with a heater voltage of 6.0volts.

 

GENERAL CHARACTERISTICS

Plate Dissipation (Max.)                  250 W

Screen Dissipation (Max.)                     12 W

Grid Dissipation (Max.)                   2 W

Frequency for Max. rating (CW)     500 MHz

Amplification Factor                        5

Filament/Cathode Oxide Coated

Voltage                                          6.0 V

Current                                          2.6 A

Capacitance Grounded Cathode

Input                                               15.7 pf

Output                                           4.5 pf

Feedthrough                                  0.04 pf

Capacitance Grounded Grid

Input                                               13.0 pf

Output                                           4.5 pf

Feedthrough                                  0.01 pf

Cooling                                     Forced Air

Base                                         9 Pin Special

Recommend Air Socket                 SK-600A

Recommend Air Chimney                     SK-606

Boiler ---

Length                               2.46 in; 62.50 mm

Diameter                           1.64 in; 41.70 mm

Weight                        4 oz; 113 gm

Update Date:2011-02-15 03:03:32

electron tube 4CX250B