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February 2003

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Thu, 27 Feb 2003 08:21:06 -0600
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"TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
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From:
Dave Hillman <[log in to unmask]>
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Hi Poh! I just have to ask the question - "Why do you want a shiny solder
joint"? A solder joint's surface texture has very little to do with its
quality and use environment integrity. The JSTD-001 and 610 committees have
acknowledged that fact with the elimination of requiring solder joints be
"bright and shiny". Certain metallizations (such as gold) can influence the
solder joint surface texture but have no impact of reliability. Reliance on
a solder joint's appearance as a measure of qualify can be a dangerous
assumption.

Dave Hillman
Rockwell Collins
[log in to unmask]



                      Poh Kong Hui
                      <[log in to unmask]        To:       [log in to unmask]
                      M.SG>                    cc:
                      Sent by: TechNet         Subject:  [TN] : Shining smooth solder joint on ENIG or Gold plating Board.
                      <[log in to unmask]>


                      02/27/2003 06:18
                      AM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to Poh
                      Kong Hui






Hi Technetters,

Can someone advise me how to get a good smooth shining solder joint on the
ENIG board or board with gold plate SMT pads.

As I can understand that board subjected to reflow soldering, the solder
joint tends to look dull and not so smooth joint. But, is there any way to
get a good shining joint.

Thanks.

Poh

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