Hi Mike,
You remind me of someone told me that there is reflow machine that provide short liquidus time. I do not recall the brand name of the machine, but I understand it is an European machine.
I see the reflow profile is having around 20 seconds liquidus time.
Poh
--- Mike Fenner <[log in to unmask]> wrote:
> Keeping the time over liquidus as short as possible and rapid
> cooling as
> possible will help, subject to the possibilities of your system
>
> Regards
>
> Mike Fenner
>
> Applications Engineer, European Operations
> Indium Corporation
> T: + 44 1908 580 400
> M: + 44 7810 526 317
> F: + 44 1908 580 411
> E: [log in to unmask]
> W: www.indium.com
> Leadfree: www.Pb-Free.com
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Morse, Carrie
> Sent: Thursday, February 27, 2003 3:57 PM
> To: [log in to unmask]
> Subject: Re: [TN] : Shining smooth solder joint on ENIG or Gold
> plating
> Board.
>
>
> Poh,
> Although shiny joints are not an IPC/J-STD requirement, you can
> minimize
> dullness by using nitrogen in your oven, or, by changing solder
> pastes.
> Some pastes provide for shinier joints than others. But again,
> shininess is
> not a requirement.
>
> -Carrie
>
> -----Original Message-----
> From: Poh Kong Hui [mailto:[log in to unmask]]
> Sent: Thursday, February 27, 2003 7:18 AM
> To: [log in to unmask]
> Subject: [TN] : Shining smooth solder joint on ENIG or Gold plating
> Board.
> Importance: High
>
>
> 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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