Anyone: Question on double sided SMT, RMA paste. After side 1 reflow, we plan to semi-aqueous clean (followed by a short bake at 85C) before any work on side 2. Will the short exposure to DI water in the rinse phase lead to any appreciable moisture uptake in PEM's? Or does the mechanism involve longer term exposure to atmospheric moisture? We could test samples, weighing before and after, but since the mix is considerable, advice on whether this is necessary would be welcome. Joe Kane Lockheed Martin Control Systems ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################