One of the more interesting assumptions of the IPC:
ALL holes have pads, even unsupported (unplated) ones.
Sorry I don't have a reference here, and can't give a logical reasoning,
but that's the source of the confusion.

Jack


Date:    Tue, 25 Jun 2002 17:14:59 -0700
From:    "Mcmaster, Michael" <[log in to unmask]>
Subject: Re: Definition of Supported/ unsupported hole

So if it's unplated, why does an unsupported hole have a breakout (or more
appropriately a "no breakout") requirement (IPC-6012 Table 3-5)?

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