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June 2005

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Subject:
From:
"Dehoyos, Ramon" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dehoyos, Ramon
Date:
Tue, 21 Jun 2005 16:30:49 -0400
Content-Type:
text/plain
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text/plain (103 lines)
        Those boards may be reworkable. So it may not be a total loss.
        Ramon

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Jeffrey Bush
Sent: Tuesday, June 21, 2005 3:52 PM
To: [log in to unmask]
Subject: Re: [TN] Mis-registered soldermask on BGA pads...


This looks like the mask was coated twice and the second coat is the
issue.

Jeffrey Bush
Director, Quality Assurance and Technical Support

VERMONT CIRCUITS INCORPORATED
  76 Technology Drive - POB 1890
    Brattleboro, Vermont 05302
      Voice: 802.257.4571.21 Fax: 802.257.0011
           http://www.vtcircuits.com
 
-----Original Message-----
From: Stephen Gregory [mailto:[log in to unmask]] 
Sent: Tuesday, June 21, 2005 2:44 PM
To: [log in to unmask]
Subject: [TN] Mis-registered soldermask on BGA pads...

Hi folks!

Just got some bare fabs at the back door, and found that the
soldermask is mis-registered around the BGA pads.

The design is that the pads are supposed to be NSMD pads,
but only half the pad is...

I think I'm going to return these boards to sender, just checking
with you all to see if you would do the same thing...

You can see what they look like at:

http://www.stevezeva.homestead.com click on Picture Page 2,
then look for Mis-registered Mask...

Once, just once, I wish I could come into work and not have some
sort of problem...but I guess that's why I have a job. Oh well...


Kind regards,

-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
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