This is hot as we have to make a decision... What will be the impact if the thickness of the fab we received from the supplier is smaller due to prepregs issues than what we have specified on the drawing but within the impedance specified? I mean any other electrical issues and not mechanical ones I should be aware of. Also to correct the problem, is it advisable to change the prepregs from two 2113 prepregs to 2113+2116 combination. Any problem due to different material combination. Thanks in advance. re, ken patel ______________________________________________________ Ken Patel Phone: (408) 490-6804 1708 McCarthy Blvd. Fax: (408) 490-6859 Milpitas, CA 95035 Beeper: (888) 769-1808 ################################################################ 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 ################################################################