Homebrew PCBs

In a message dated 12/30/2005 10:33:49 P.M. Central Standard Time,  
alan00463@... writes:

pad  should
include a 5 mil annulus (ring) around the component
leads.   But I don't know what the diameter of the
leads are for these  components.   


This ring-width would be OK perhaps for VERY compact  lead-spacing where the 
board has ALL plated-through-holes ("PTH").
5 mil is only about twice the width of a thinner human  hair!  The hole must 
be drilled 5 mil LARGER for PTH, as the plating and  solder-coating fills in 
the holes about that amount.  For home-brew,  NON-PTH, go for 0.08" or more, or 
at least 0.065 for IC's.  


[Non-text portions of this message have been removed]