Reduced depletion for reliable signal transmission.ģ. Heat-resisting property, chemistry resisting, impact endurance, peel-off resisting must be good. Water absorptivity has to be reduced, high water absorptivity will certainly influence DK as well as DF when in the damp atmosphere.ĥ. The thermal expansivity ought to coincide with copper aluminum foil as long as feasible, due to the fact that the distinction will certainly result in copper aluminum foil divided in the modifications of cool and also warm.Ĥ. DF ought to be little, which mostly influences the top quality of signal transmission, the smaller sized DF might make smaller sized signal waste as necessary.ģ. DK needs to be tiny as well as steady sufficient, typically the smaller sized the much better, high DK might cause signify transmission hold-up.Ģ.
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