Whether joining two wires together or attaching multiple wires directly to a terminal or assembly, engineers must choose between resistance welding, soldering and ultrasonic welding.
Despite years of research by electronics assemblers, the problem of tin whiskers defies an easy solution. And the stakes are high, to say the least. Since 1992, tin whiskers have been blamed for the complete failure of three commercial satellites and the partial disabling of four others.
No-clean solder paste was supposed to obviate the need to clean circuit boards. So why are many electronics assemblers still grappling with the process?
