Tony -

As with other surface mount components, I strongly recommend that you don't
use solder mask defined pads if at all possible.

Ed Valentine
Electronics Manufacturing Solutions
8612 Mourning Dove Road, Raleigh, NC 27615
Phone: (919) 270-5145, Fax: (919) 847-9971
Email: [log in to unmask]
Website: http://www.ems-consulting.com

----- Original Message -----
From: "Huffman, Tony" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, September 22, 2000 11:43 AM
Subject: [DC] uBGA


> Greetings,
>         I am gearing up for my first BGA design and it is a .8mm pitch
uBGA.
> Any help for me to find literature on-line that will help me gear up for
> this would be appreciated. There are things like Solder Mask Defined pads
> vs. Non Solder Mask Defined pads that I am not sure on which way to go.
> Thanks in advance.
>
> > Tony G. Huffman
> > PC Board Layout Specialist
> > Hunter Engineering Company
> > 11250 Hunter Drive
> > Bridgeton, Mo. 63044
> > [log in to unmask]
> > (314)731-0000 ext.330
> > (314)731-9932 FAX
> > http://www.hunter.com
> >
> >