Knowledge about the production of bayonet connectors

Chassis connectors have been a common accessory for electronic products in modern society, in recent years, the development of the electronics industry to drive the development of the chassis connector industry, then in the chassis connector Gading manufacturing how should we judge the quality of the product? Check what problems need to pay attention to? 1. Judgment of quality solder joints: good solder joints should be in the life cycle of the equipment, its mechanical and electrical properties do not fail. Its appearance: complete and smooth shiny surface; appropriate amount of solder and solder to fully cover the pad and lead to the welded parts of the component height; good wettability; the edge of the solder joints should be thin, solder and pad surface wetting angle of 300 or less is good, greater than 600. 2.SMT processing appearance check content: components have no missing; components have no paste error; there is no short-circuit; there is no false soldering; false soldering. There is no virtual welding; virtual welding is relatively complex reasons. 3. virtual welding judgment: visual or AOI inspection. When the solder joints found to be too little solder solder wetting bad, or solder joints in the middle of the broken seam, or the solder surface was convex ball, or solder and SMD are not pro-melting, etc., we must pay attention to, even if the phenomenon of a slight hidden danger, should immediately determine whether there is a batch of soldering problems. The method of judgment is: to see if more PCB on the same location of the solder joints have problems, such as just individual PCB problems, may be solder paste is scratched, pin deformation and other reasons, such as in many PCB on the same location have problems, this time it is likely to be a bad component or a problem caused by the pad. Or use the online tester special equipment for inspection.

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