BGA Collapsing & Non-Collapsing Ball
Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=2140
Printed Date: 19 Nov 2024 at 2:41am
Topic: BGA Collapsing & Non-Collapsing Ball
Posted By: mahmoodv99
Subject: BGA Collapsing & Non-Collapsing Ball
Date Posted: 08 May 2017 at 9:11pm
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How I can find a BGA has collapsing or non-collapsing balls? Not mentioned in datasheet. |
Replies:
Posted By: cioma
Date Posted: 09 May 2017 at 1:03am
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I suppose that can be judged by ball material. |
Posted By: mahmoodv99
Date Posted: 09 May 2017 at 2:22am
how ?
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cioma wrote:Posted By: magnus.lictor
Date Posted: 09 May 2017 at 2:39am
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Tom Hausherr wrote a very nice blog on this subject a while ago. Have a look at https://blogs.mentor.com/tom-hausherr/blog/tag/bga/" rel="nofollow - https://blogs.mentor.com/tom-hausherr/blog/tag/bga/ It is in the lower part of this document. |
Posted By: cioma
Date Posted: 10 May 2017 at 1:08am
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By likelihood of the material to melt during reflow. |
Posted By: Tom H
Date Posted: 10 May 2017 at 6:10am
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Normally, a non-collapsing Ball starts at 0.50 mm pin pitch however, there could be some 0.65 mm pitch. The pad size grows larger to accommodate the hole-in-pad annular ring. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |