Solder Extraction Tip
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-05
Electronic circuit boards are populated with spring-contact connectors which are inserted into plated through holes (PTHs) and then soldered into place. The solder is applied to the wire side of the board and flows into each PTH, securing the spring connector and creating a solder fillet around the base of each. The solder fillets often become excessive and do not meet specifications. An excessive solder fillet will reduce spring flexibility of connectors and inhibit carrier housings from seating properly, as shown in Fig. 1. A previous repair alternative was to chisel the fillet away with a sharp hand tool. This method proved not only time consuming but a high risk in connector damage. The only other recourse was to scrap the product. A new repair technique incorporates a solder-extraction device and a unique tip design.