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November 2009

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Subject:
From:
Matthew Park <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Matthew Park <[log in to unmask]>
Date:
Fri, 20 Nov 2009 14:16:51 -0500
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Technet,

I have one minor issue with a ground pin solder hole fill. This ground pin is flat and has U shape at one end and the U-shape end is inserted into two PCB holes that are connected together. These two pins (U-shape with 0.1" spacing ) are mechanically and electrically connected.  Typically, we have ~80% hole-fill on one of U-shape pins and the other U-shape pin has ~20% hole-fill. 

Are these hole-pins acceptable as per IPC Class 2 requirement? I couldn't find this specific standard in IPC 610D. If  I remember right, an older 610 has this specification. I know IPC 610D section 7.5.5.1 states  min 50% hole fill is acceptable for one ground pin hole for Class 2. 

thank you
Matthew

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