> > The design guides for MIL-STD-275 and IPC-D-275 require non-functional pads 
> > on all layers of a multilayer PWB.  Can manufacturers remove them an their 
> > judgment?
> > 
> > If anyone knows the verse and script, that would be great.
> > 
> > Thank you in advance,
> > Kevin Thorson
> > Loral Defense Systems - Eagan
> > 
> > 
>  I would be very upset if our manufacturer removed the non-functional pads
>  from our supplied data. (or if they did any other other adjustment outside
>  of the expected "process modifications"). I question how incomeing QA would
>  accept them. And how much they were paying the Source Inspector to overlook
>  this change.
> 
>  We work closely with our vendor, while we may selectivly remove some
>  non-functional pads from our artwork if spacing is an issue, we do not 
>  globally remove the non-functional pads.  The via sizes in use today
>  are small enough that layer to layer registration must be tight.
> 
>  The advantages of keeping this pad far out-weigh the minor advantage of
>  deleteing this from your artwork. 
    (see some of the other responces good stuff)
> 
> 
>                                    '''
>                                   (O O)
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>   Jack Holm                    \_/     \_/     
>   PC Design "System Weenie"     /  jah  \     Phone (219) 487-6199
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>