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.

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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

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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

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Dieter Bergman