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March 2019

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Subject:
IPC STD, Mechanical Mounting Hole, PTH, with wagon wheel PTHs
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Date:
Thu, 28 Mar 2019 13:24:54 +0000
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Fellow TechNetters,

    What is IPC STD/guideline for Mechanical Mounting Holes, PTHs, with wagon wheel design for BGA Heat Sink achoring.   Are this wagon wheel PTH require solder or free of solder.

Victor,

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