We have a design with a external plane to board edge clearence of .025 inch on polyimide material. IPC-6012 para 3.3.1 allows up to 50% haloing to the nearest conductor. Can the conductor in this case be considered the external plane or is the requirement refering only to traces and pads? If I have greater than 50% haloing is it rejectable per IPC-6012 para 3.3.1? Rejectable per Mil-PRF-55110F para A.3.5.1.1? Thanks, Ron Payne PRIMEX Aerospace ############################################################## 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 ##############################################################