Research on Welding Technology for Ceramic Dielectric Filter
After observing the crack characteristics and analyzing the physical properties of the materials in-volved,improvements were implemented to address the issue of dielectric blank cracking during the assembly process of a ceramic dielectric filter.These enhancements comprised installing a metal shielding cover and modifying the design of the printed board pad and reflow soldering process.Reliability tests of the welded device,including temperature and mechanical tests,were conducted,resulting in a product qualification rate of 100%.The analysis of DPA section revealed no risk of failure due to cracking or microcracking in the dielectric filter.The research find-ings indicate that this welding process effectively resolves the issue of welding cracks with ceramic dielectric filters,thereby achieving high product reliability.