Two methods of miminizing the tCE issue are the use of
Columns rather than Balls and the use of an underfill.
> Perez, Raul wrote:
> > There is a Joint Industry Standard by both the IPC and the EIA on
> > Implementation of Ball Grid Array and other High Density Technology.
> > J-STD-013
> > Check out these pages for more info.
> > http://www.ipc.org
> > http://www.eia.org
An additional resource is Motorola's application note
AN1231, available as a pdf file on their web site. Afraid
you'll have to perform a search as I did not keep the link.
Regards to all,
-- Jeff Seeger Applied CAD Knowledge Inc Chief Technical Officer Tyngsboro, MA 01879 jseeger "at" appliedcad "dot" com 978 649 9800