The electron tube ITL12-1 is a forced air cooled, coaxis structure ceramic-metal, medium-mu power triode containing a thoriated tungsten cathode, with maximum output power up 33kW as continuing operation and up 50kW as pulse operation. The tube is used mainly in industrial radio-frequency heating service. The tube is interchangeable with the 3CX10, 000D3 in most application.

Filament thoriated tungsten

Filament voltage (+ 5 %, - 10 %)     5.8 V

Filament current                              145 A

Surge current                           600 A max.

Cold resistance                               5 mΩ

Capacitances:

• grid-anode                                     21 pF

• grid-cathode                                  55 pF

• cathode-anode                              1 pF

Amplification factor                   22 approx.

Transconductance (Va: 10 kV, Ia: 4 A)

50 mA/V approx.