The following question is one that was provided by designers for the "A" basic level exam. It is NOT included in the final published test and is for reference only. The topic is Copper Clad Laminate. *********************************************************** 130 What is the most commonly used resin system for producing printed boards? A. PTFE B. epoxy C. polyimide D. cyanate ester select the most correct answer *********************************************************** Previous QOD 129 What are the most common dielectric thicknesses of copper-clad laminate used to produce double-sided printed boards? B. .75 mm [.030"] D. 1.50 mm [.060"] F. 2.40 mm [.090"] Resource: IPC-T-50 Specific Terms, IPC-D275 para.8.5.1, 8.6, 8.6.2 ************************************************************* Please send comments, constructive critique, or suggestions to Lisa Williams at [log in to unmask] Dieter Bergman