Chris, I've seen many emails regarding the replacement of mil-s-13949, but never any list of replacements to ipc-4101. Is there a guide to what slash sheet from mil-s-13949 correlates to the slash no.s in 4101? Tom Kropski Sierra Technologies, Inc ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################