Good Morning Everyone!

I got Wee Mei's picture up...go to:

http://stevezeva.homestead.com/files/Soldermask_Defect.JPG

I've seen this before, but I can't explain it either.

Kind Regards,

-Steve Gregory-

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wee Mei
Sent: Sunday, December 04, 2005 6:58 PM
To: [log in to unmask]
Subject: [TN] What is this solder mask defect?

Steve,

Hello,

The suspect is completely flat and smooth to touch. An interesting
observation is that though it appear at the same location for all the
10pcs
of board, the size of the image tend to get smaller and smaller if the
boards are arranged starting with the largest image. It can't be soda
strawing as it is not on trace. It can't be pink ring as it is not
around
hole. What can it be? What is the likely cause?

Will ask Steve to put it up. Kindly take a look. Your opinion is greatly
appreciated.

Regards,
Wee Mei

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