[PCB_FORUM] Re: 0402, 0603 round pads

Hey Austin,

 

Are you tired of the snow yet?!?  I shoveled out this morning before
coming in to work!  It's a good workout!

 

I can see the benefit of using them on the bottom side, but I'm seeing
them on top also.

 

Regards,

Gary

 

  

Gary E. MacIndoe

PCB Design Engineer

Longmont, Colorado

 

amd.com

gary.macindoe@xxxxxxx

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Austin Franklin
Sent: Thursday, January 04, 2007 7:53 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: 0402, 0603 round pads

 

Hi Gary,

 

I use round pads for my 0402s on the opposite side of 1mm BGAs.  That
way I can keep the decoupling caps and termination resistors right
there.  Works fine, haven't had any yield problem.

 

Regards,

 

Austin

        -----Original Message-----
        From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Macindoe, Gary
        Sent: Thursday, January 04, 2007 6:05 PM
        To: icu-pcb-forum@xxxxxxxxxxxxx
        Subject: [PCB_FORUM] 0402, 0603 round pads

        Hey guys,

         

        Man has it been quiet (or am I not receiving forum e-mails?).

         

        So, I've been looking at some designs from a couple of other
groups within the company.

        Both of them have their 0402 and 0603 foot prints with round
pads (0402 = rd25).

         

        Is anyone out there also using round pads for 0402s and 0603s,
and why?

         

        They have oval pads for their 0805s and 1206s also.

         

        I still have square or rectangular for all of the above.  Could
it have something to do

        with lead free?

         

        Thanks and Happy New Year!

         

        Gary

         

         

        Gary E. MacIndoe

        PCB Design Engineer

        Longmont, Colorado

         

        amd.com

        gary.macindoe@xxxxxxx

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