Hi Steve,

I don't have the VITA VME standard, but I have IEEE 1101.1-1998, "IEEE
Standard for Mechanical Core Specifications for Microcomputers Using IEC
60603-2 Connectors", upon which the VME standards are based.  There are a
couple of references to thicker boards in here.  The bottom line is pretty
much what Peter said:  you can have a thicker board, but you have to mill it
down for the card guides.  However, since everything is dimensioned from the
center of an 0.063" board, the board can get thicker in the direction of the
bottom side without disturbing the connector locations.  This is true as
long as you reduce the thickness from the bottom side back to the reference
0.063" at the card guides.  In this case, you can have the full thickness
board under the connectors.  This is explained in the notes to figure 15 of
this standard on page 26.

Regards,

Seth Goodman
Goodman Associates, LLC
tel 608.833.9933
fax 608.833.9966

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