Gold-tin sealing cap airtight moisture-proof radio frequency power tube shell base structure

The utility model provides a radio frequency power tube shell base structure with an airtight and moistureproof gold-tin sealing cap. The radio frequency power tube shell base structure is composed of a flange, a heat-conducting fin, a transition ring, a carrier, a ceramic frame, a lead and a sealing ring from bottom to top in sequence. According to the utility model, through the structural combination of a plurality of metal and ceramic parts, the heat dissipation index requirement and the electric connection relation index requirement of the device are met, and the full sealing of the cavity is realized. The arc edge is cut into the straight edge at the lead welding position of the outer contour of the ceramic piece, so that the firmness of the lead can be improved; the inner cavity of the base is of a rectangular structure, and the micro-assembly efficiency can be improved. The fully-sealed shell can prevent water vapor from invading, the phenomenon of silver dendrite migration of the radio frequency power