Abstract
Surface insulation resistance (SIR) testing is used in a number of ways to characterise residues or determine the effect of residues on the performance of printed wiring boards (PWBs) and assemblies (PWAs). Stated simply, SIR testing is the measurement of leakage currents on or in a substrate, usually during exposure to elevated temperature and humidity conditions, for a varying amount of exposure time. An examination of the resistance trends over time, and occurrences of metal migration and/or corrosion, can determine the potential threats of compatibility problems with circuit card assembly materials. This paper examines how SIR testing is used in various areas, with an emphasis on the design of the SIR test vehicle. With the advent of ANSI‐J‐STD‐001B, more companies will need to design their own test vehicle for process qualification.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
