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
>
> ---------------------------------------------------
> Technet Mail List provided as a free service by IPC using LISTSERV
> 1.8e
> To unsubscribe, send a message to [log in to unmask] with following
> text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail
> to
> [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at:
> http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/html/forum.htm for
> additional
> information, or contact Keach Sasamori at [log in to unmask] or
> 847-509-9700
> ext.5315
>  -----------------------------------------------------
>
> ---------------------------------------------------
> Technet Mail List provided as a free service by IPC using LISTSERV
> 1.8e
> To unsubscribe, send a message to [log in to unmask] with following
> text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to
> [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at:
> http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/html/forum.htm for
> additional
> information, or contact Keach Sasamori at [log in to unmask] or
> 847-509-9700 ext.5315
> -----------------------------------------------------
>

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------