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Re: [PROTEL EDA USERS]: Via size







For high speed digital design the more via's you use the better as the idea is
to make a low  inductance connection to the plane. This is important for GND
planes as you can get ground bounce problems if it is not well decoupled.  Each
via has a length which has an inductance so many small vias actually reduce the
inductance by having the connections in parallel.



_____________________________________________________________________

Clive Broome
IDT Sydney Design Centre                                           Ph:
        +61 2 9763 4187
8 Herb Elliot Ave, Homebush                                       Fax:
        +61 2 9746 1501
Sydney,  NSW, 2140                                                        Email:
        clive.broome@qsa.idt.com
Australia
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