Sep 13, 2010 #1 T tennythomas Member level 2 Joined Jul 23, 2010 Messages 48 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,583 Should the dielectric constants of core, prepreg and build up layers (laser drillable prepregs) in HDI be same or different? Thanks in advance.
Should the dielectric constants of core, prepreg and build up layers (laser drillable prepregs) in HDI be same or different? Thanks in advance.