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Date: | Fri, 28 Feb 2003 06:14:21 +0800 |
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Hi Dave,
The problem is that I'm having extreme stubborn customer that insists to meet the requirement.
I do not know how they do it, but those sample boards that they have showed me is of smooth shining joint.
I doubt they rework all boards, as each board consists, at least 2000 solder joints.
Poh
--- Dave Hillman <[log in to unmask]> wrote:
> 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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