Board defect? Purple spot
Could it be the desmear or Permanganate?
 

*GOD BLESS AMERICA*



William W. DeCray III
Waytec Electronics Corp
CAD/CAM & Engineering Services Manager
PHONE:(434) 237-6391 ext 115
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Pelkey, Glenn
Sent: Thursday, May 16, 2002 1:14 PM
To: [log in to unmask]
Subject: [TN] Board defect? Purple spot

Hi all,

        We just spotted a new board level defect, or is it?  It is a small, about 25 mil diameter circle that is bright purple in color.  We dug one out and found it goes all the way through the board.  Definitely no glass fiber in this spot, and it shows some peeling on the edge where it meets the top of the soldermask.

        So, we have our guess at what it is, but have any of you seen this before?

Thanks in advance for any input.

Glenn