TECHNET Archives

June 2000

TechNet@IPC.ORG
Options: Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
Laminate condition
From:
Barry Gallegos <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 8 Jun 2000 12:14:04 -0600
Content-Type:
multipart/alternative
Parts/Attachments:
text/plain (576 bytes) , text/html (5 kB) 
Dear Sirs, Madams, Guru’s.

I have an assembly that we processed thru SMT and then thru the wave solder
operations. Wave solder flux was with Alpha metals 856 water-soluble. The
assembly is exhibiting a white cloudy / milky appearance that looks almost
as if the laminate/solder mask has changed color. No matter how much we wash
this assembly, it will not go away.

Is this due to possible moisture in, around or under the solder mask /
laminate. What is it and  is it acceptable.


Any advice would be appreciated.



Yours truly, (wana-be guru.)

Barry Gallegos
Western Electronics.
208-377-1557

ATOM RSS1 RSS2