Hi, I'm looking for IPC 650 display on CD of the requirements from lines/spaces, solder mask coverage etc. for different classes. I've seen such "tutorial" discs distributed by STM plus for assembly and packaging. Could anyone recommend a source for such data for PCB industry. Thanks Jacob Mozel # ################################################################ 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 ################################################################