Vcs3500cj is a high-power cermet triode, which adopts the integral structure of electronic tube and water jacket, thorium tungsten cathode and super evaporative cooling anode. The maximum anode dissipation power can reach 300kW, and the maximum operating frequency is 30MHz. The tube is suitable for oscillation in industrial high-frequency heating equipment. It can be interchanged with rs3500cj electronic tube of Thales abroad.