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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          111  What is the main consideration in the standard      
              fabrication allowance?
    
          A.   process variation
          B.   hole tolerance capability
          C.   aspect ratio characteristics       
          D.   minimum annular ring requirements
                                   select the most correct answer

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Previous QOD

          110  Given a maximum through-hole component lead         
              diameter of 0.5 mm [.020"], what is the minimum     
              finished plated through hole size that should be    
              used?
          
                    B.   0.65 mm [.026"]
          
Resource: IPC-T-50 Specific Terms and IPC-D-275 para 5.4.8;
figure 5-26; table 5-15.

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Please send comments, constructive critique, or suggestions to
Lisa Williams at [log in to unmask] 

Dieter Bergman