PCB Libraries, Inc. | https://www.pcblibraries.com/forum/bga-pad-size_topic2607_post10649.html
: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5484 Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Posted: 23 Jun 2022 at 7:52am Here is the BGA Pad Size Reduction table for Collapsing Balls
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PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/bga-pad-size-calculation_topic594_post2030.html
% = the Pad Size Reduction from the Ball Size. Example: the first Ball Size in the table is 0.60 mm and the Pad Size Reduction calculation is 25%. So 25% of 0.60 mm = 0.45 mm nominal. However, IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/bga-pad-size-calculation_topic594_post1945.html
% = the Pad Size Reduction from the Ball Size. Example: the first Ball Size in the table is 0.60 mm and the Pad Size Reduction calculation is 25%. So 25% of 0.60 mm = 0.45 mm nominal. However, IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/bga-pad-size-calculation_topic594_post2751.html
% = the Pad Size Reduction from the Ball Size. Example: the first Ball Size in the table is 0.60 mm and the Pad Size Reduction calculation is 25%. So 25% of 0.60 mm = 0.45 mm nominal. However, IPC-7351
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/bga-pad-size-calculation_topic594_post2029.html
% = the Pad Size Reduction from the Ball Size. Example: the first Ball Size in the table is 0.60 mm and the Pad Size Reduction calculation is 25%. So 25% of 0.60 mm = 0.45 mm nominal. However, IPC-7351
