Hello, First, thanks to everyone for the replies to my questions about HASL -- the information was very helpful. Now, does anyone have an experience or data on the effects of radiation on silver-filled conductive epoxies? [Radiation exposure as in space applications.] The manufacturers of the epoxies say no effects. Thanks in advance for your help. Sheila Smith, Tracor Aerospace ################################################################ 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 ################################################################