Hello TechNet, I am looking for peer perspective on conformal coating coverage of CCA's and components. We currently are spraying Humiseal 1B31 manually from four directions. We have recently been requested to guarantee coverage under all components. Historically there has been debate on the degree of coverage under certain components - examples include large pin grid arrays, large potted transformers, and I suspect even BGA components. Even the insides of DIP leads (mounted on heatsinks) have been questioned in the past. Has anyone investigated coverage on these types of parts and / or does anyone have experiences with dip coating 1B31, either as an initial coat before spray coating or as a full coating? Hearing of your experiences would be much appreciated. Best regards, Ken Devitt 973-284-3880 Manufacturing Engineering ITT Avionics Clifton, NJ ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################