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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
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