[PCB_FORUM] Re: 0402, 0603 round pads

  • From: "Austin Franklin" <allegrolist@xxxxxxxxxxxx>
  • To: <icu-pcb-forum@xxxxxxxxxxxxx>
  • Date: Fri, 5 Jan 2007 11:52:05 -0500

Hi Gary,

No, but I spent quite a bit of time there years ago.  I'm in Harvard, MA.

Regards,

Austin
  -----Original Message-----
  From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Macindoe, Gary
  Sent: Friday, January 05, 2007 11:46 AM
  To: icu-pcb-forum@xxxxxxxxxxxxx
  Subject: [PCB_FORUM] Re: 0402, 0603 round pads


  Hmm. I thought you were in Boulder Austin?  Guess not!





  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: Friday, January 05, 2007 9:38 AM
  To: icu-pcb-forum@xxxxxxxxxxxxx
  Subject: [PCB_FORUM] Re: 0402, 0603 round pads



  Hi Gary,



  I keep hearing and seeing you guys are getting pummeled.  We have had NO
SNOW!!!  And, it's supposed to be 63F tomorrow!



  Regards,



  Austin



    -----Original Message-----
    From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Macindoe, Gary
    Sent: Friday, January 05, 2007 11:17 AM
    To: icu-pcb-forum@xxxxxxxxxxxxx
    Subject: [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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