PCB Libraries Forum : BGA Pad Oversize https://www.PCBLibraries.com/forum/ Tue, 21 Apr 2026 04:38:25 +0000 Fri, 24 Jun 2016 08:02:05 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=1913 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[BGA Pad Oversize : V2016.02 is 3 months old. You...]]> https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7813.html#7813 Author: Tom H
Subject: 1913
Posted: 24 Jun 2016 at 8:02am

V2016.02 is 3 months old.

You should update to V2016.07 or better yet, V2016.08 pre-release - www.pcblibraries.com/downloads

Install the latest version and then let's set up a webcast to answer all your questions.

We offer live webcast training 8:00am - 2:00pm PDT 7 days a week.
]]> Fri, 24 Jun 2016 08:02:05 +0000 https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7813.html#7813 <![CDATA[BGA Pad Oversize : Hi, I am using V2016.02There is...]]> https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7812.html#7812 Author: tanne16
Subject: 1913
Posted: 24 Jun 2016 at 7:56am

Hi, I am using V2016.02
There is an oversize in the setting that's coming up. Is there a reason for it ? If you create a reference BGA with a Pitch of 0.65 and a nominal ball size of 0.4mm in the oversize ball size it says 0.05mm  by default instead of 0 but if you create the same with a 0.3mm ball size there is no oversize.]]> Fri, 24 Jun 2016 07:56:08 +0000 https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7812.html#7812 <![CDATA[BGA Pad Oversize : For the non-collapsing BGA ball,...]]> https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7785.html#7785 Author: Tom H
Subject: 1913
Posted: 21 Jun 2016 at 11:27am

For the non-collapsing BGA ball, here are the Ball Sizes / Pad Sizes.
This is when the pad size round-off = 0.01
  • 0.70 / 0.58
  • 0.60 / 0.50
  • 0.50 / 0.45
  • 0.45 / 0.41
  • 0.40 / 0.37
  • 0.35 / 0.33
  • 0.30 / 0.24

Are you sure you're using Library Expert V2016.07?


]]> Tue, 21 Jun 2016 11:27:26 +0000 https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7785.html#7785 <![CDATA[BGA Pad Oversize : Hi, I was wondering why is there...]]> https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7784.html#7784 Author: tanne16
Subject: 1913
Posted: 21 Jun 2016 at 11:17am

Hi,

I was wondering why is there a pad size oversize on certain BGA depending on their ball size ?

I tried a 0.50 mm pitch BGA with a ball size of 0.30 mm and the pad oversize was at 0 mm and as soon as I put the ball at 0.50 mm the pad oversize became 0.05 mm.

Is there a reason or is it simply a bug?

It made our footprint pads bigger when it wasn't necessary.

]]> Tue, 21 Jun 2016 11:17:15 +0000 https://www.PCBLibraries.com/forum/bga-pad-oversize_topic1913_post7784.html#7784