SMTA International Conference Proceedings


Author: Daniel (Baer) Feinberg
Company: P. Kay Metal Inc. and Fein-Line Associates, Inc.
Date Published: 9/24/2006   Conference: SMTA International

Abstract: Dross generation has always been a costly issue for the electronics assembly industry. At least half, and in many cases, more than half of the metal (solder) purchased for electronic manufacture is wasted as it becomes tied up in dross. With the advent of lead free solders the moderate economic pain of dross generation becomes acute. A new process recently introduced to the industry cures virtually all problems caused by dross.

This paper will show the true cost of dross, including metal replacement, loss of efficiency, and safety as well as environmental issues clearly demonstrate a need for a solution to this problem. In addition to dross elimination the process has been shown in the lab to reduce temperatures for wave and selective soldering and to improve wetting. Collaborating beta test as well as lab test data will be presented along with initial actual production results. In addition to answering the technical questions, why and how the “economics of dross” will be examined and a specific and significant cost savings scenario will be presented.

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