scope:

Abstract

This technical paper covers the testing and evaluation of polymeric conformal coatings for moisture and insulation resistance (MIR) and dielectric withstanding voltage (DWV). This effort was initiated by the IPC Conformal Coating Task Group to support technical decisions for IPC coating specification CC-830 as part of the Revision C process. Rockwell Collins provided precleaned test substrates, committee members applied and cured conformal coatings on the substrates and returned the coated substrates to Rockwell Collins for testing. MIR testing was done per a modified method of IPC-TM-650, method 2.6.3.4. DWV testing was done per a modified method of IPC-TM-650, method 2.5.7.1. This paper presents the results of this blind study in coded format. The study was initiated in March, 2013. The original phase of testing was completed by August, 2013. Additional work on some of the ultra-thin coatings was performed between November, 2013 and May, 2014.