RS3020CL

The RS3020CL 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 RS3020CL is a forced-air cooled triode.

Electrical characteristics of RS3020CL

Cathode Filament thoriated tungsten

Filament voltage 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.

Transconductance (Va: 3 kV, Ia: 2 A) 36 mA/V approx.

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

Mechanical characteristics of RS3020CL

Operating position vertical, anode up or down

Weight 5.6 kg (9 lbs) approx.

Dimensions see outline drawing

Maximum ratings of RS3020CL

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 10 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 RS3020CL

Anode cooling forced air

Cooling water flow and pressure gradient see cooling curves

Inlet air temperature 25 °C typ.

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

Typical Operation  of RS3020CL (Class C RF oscillator for industrial applications)