Accelerated solvent resistivity test

摘要

A method for testing electronic assemblies for resistivity to fluorocarbon solvent permeation. After attaching electronic components on host boards, sample assemblies are selected for testing. Fluorocarbon solvent is added to a container suitably sized to allow complete immersion of the samples. Fluorescent dye is added to the solvent and the solvent dye solution heated to the boiling point. Samples are immersed in the solution and initial time noted. The samples are withdrawn after a predetermined time interval, dried and wiped clean to remove excess solvent/dye from the outside of the components. The electronic assemblies are disassembled and illuminated by ultraviolet light. If dye is observed in an area thought to have been sealed, fluorocarbon solvent permeation is proven.