RS3020CJ

The RS3020CJ is a RF power triode designed for dielectric heating applications. This tube uses a coaxial design and metal-ceramic technology. This triode may be operated in CW or pulse modes. For operation in pulse mode, the parameters depend on each equipment characteristics. Contact us for specific information. The RS3020CJ is a water cooled triode.

Electrical characteristics of RS3020CJ 

Cathode Filament thoriated tungsten

Filament voltage (+5%, -10%) 5.7 V

Filament current 135 A

Surge current (maximum) 405 A

Capacitances:

Grid to Anode 21 pF

Grid to Cathode 52 pF

Cathode to Anode (1) 1 pF

Amplification factor 22 Approx.

Note (1) Measured with a 30 cm diameter shielding plate in the grid terminal plane.

Mechanical characteristics of RS3020CJ 

Operating position vertical, anode up or down

Weight 4.1 kg (9 lbs) approx.

Dimensions see outline drawing

Maximum ratings of RS3020CJ 

Frequency  120 MHz

Anode voltage:

Up to 40 MHz 12 kV

From 40 to 80 MHz 11 kV

From 80 to 120 MHz 9 kV

Control grid voltage -1.3 kV

Control grid current (F < 40 MHz)

At full load, CW 0.9 A

At no load, CW 1.1 A

Peak cathode current, CW 25 A

Anode dissipation 20 kW

Grid dissipation:

Up to 40 MHz 300 W

From 40 to 80 MHz 230 W

From 80 to 120 MHz 180 W

Grid resistance (at blocked tube) 15 KΩ

Cooling of RS3020CJ 

Anode cooling Water

Cooling water flow and pressure gradient see cooling curves

Cooling water inlet pressure 6 bar max.

Water inlet temperature 35 °C max.

Temperature at any point on tube envelope 220 °C max.

Minimum air flow on filament connections 0.7 m³/min

Typical Operation  of RS3020CJ (Class C RF oscillator for industrial applications)