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 Hole
Requirements.
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112 How should the clearance be determined between a
non-functional land and a conductive plane that
surrounds the land?
A. by maintaining a minimum of 0.2 mm [.008"]
B. by maintaining a minimum of 0.25 mm [.010"]
C. by maintaining clearance equal to the
conductor spacing requirements
D. by maintaining clearance based on the copper
thickness and etch factor
select the most correct answer
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Previous QOD
111 What is the main consideration in the standard
fabrication allowance?
A. process variation
Resource: IPC-T-50 Specific Terms and IPC-D-275 para 5.3.2.1;
5.3.4.1; table 5-10.
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Lisa Williams at [log in to unmask]
Dieter Bergman
