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. *********************************************************** 129 What are the most common dielectric thicknesses of copper-clad laminate used to produce double-sided printed boards? A. .50 mm [.020"] B. .75 mm [.030"] C. 1.00 mm [.040"] D. 1.50 mm [.060"] E. 2.00 mm [.080"] F. 2.40 mm [.090"] select the three most correct answers ********************************************************* Previous QOD 128 Copper thickness is defined in ounces based on the weight of a square foot of foil material. What is the thickness of one ounce copper? D. .035 mm [.0014"] Resource: IPC-T-50 Specific Terms, IPC-D275 para.8.6.3 ********************************************************* Please send comments, constructive critique, or suggestions to Lisa Williams at [log in to unmask] Dieter Bergman