Hi,
        I have a pcb design with two fine pitch through hole connectors. In
order to route between pins on inner layers I need to remove unused inner
layer pads on that connector.
        Here's my question: from a production point of view, is it better to
selectively remove only those pads necessary or remove all unused inner
layer pads (or is there no difference?). This pcb will be manufactured IAW
IPC-2222 class 3. It's operating environment will be 0 - 70 degrees C; no
thermal shock anticipated.


Michael Hiteshew
Lockheed Martin NE&SS Marine Systems
[log in to unmask]
(410) 682-1259

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