We have a member who has submitted the following inquiry. Any information 
is greatly appreciated:

 "I would like to get any information that you have to offer concerning 
broach type pemnut fasteners in FR4 material. Normally in our designs we 
try not to use pemnuts in multilayer boards because of the damage they 
can do to internal layers. We have a recent design that does use pemnuts 
and would like to know of any concerns there might be, especially any 
spacing requirement in internal layers.

 "I would appreciate any adive you can give me on this concern."

Thanks for your help.
****************************************
Lisa M. Williams
Technical Staff
IPC
2215 Sanders Road
Northbrook, IL 60062
phone: (847) 509-9700 x 379
fax:   (847) 509-9798
email: [log in to unmask]
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