FreeLists / si-list / [SI-LIST] Re: a "via" doubt

[Michael Khusid <mkhusid@xxxxxxxxxx>]

Juan,

The "clearance hole" is a void in the ground or power plane which is created
so that via does not make contact with the ground/power plane.
It is also known as "antipad".

Mike Khusid

-----Original Message-----
From: Juan Manuel
To: si list
Sent: 7/2/02 10:36 AM
Subject: [SI-LIST]  a "via" doubt



Hi everybody,
I have a doubt about the capacitance created by a via.
In Black Magic book says that the capacitance is due to the pad size
approaches the clearance hole diameter.
My doubt is : what is "the clearance hole diameter"?
Thanks beforehand.
juan manuel 

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