Latest Developments in Surface Finishing of PCBs Using Plasma DepositionAuthors: Tim von Werne, Ph.D., Andy Brooks, and Siobhan Woollard
Company: Semblant Ltd.
Date Published: 10/24/2010 Conference: SMTA International
A substantial test programme has been undertaken investigating a wide range of performance characteristics of this plasma finish. The high frequency RF performance of this surface finish will be presented and contrasted to existing metal finishes. The unique fluoropolymer coating has been specifically developed to enable consistent and reliable Pb-free soldering. The results of solderability testing will be presented with cross sectional analysis and intermetallic layer composition of the resulting solder joints highlighted. Joint strength and reliability data for assembled boards will be discussed and compared to alternative surface finishes.
surface finish, PCB coating, fluoropolymer, corrosion protection
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