Hi Jack,
We use Matte Solder mask because:
1. Elimination of solder balls
2. The brightness make the QC eyes fatigue.
3. The spray flux at the wave soldering station is spreading more even than shiny flux (drops).
Best Regards
Reuven ROKAH
e mail: [log in to unmask]
Think green before printing this mail... Thanks
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Wednesday, August 18, 2010 7:08 PM
To: [log in to unmask]
Subject: Re: [TN] Matte Mask and SolderBalls
They do. but they tell me they have to charge extra to protect the boards
from getting scuffed, even though I can't find any rules in any standard
that say the mask can't be scuffed. Since no one commented on that (except
you, who say some give more weight to appearance than performance) I assumed
it was just one of those things.
anyway, the rebel in me wants to propose that we accept minor cosmetic
imperfections and save the cost, but this is a new topic for me and I was
hoping others may have had to deal with this subject before.
thanks,
Jack
.
On Wed, Aug 18, 2010 at 10:53 AM, Bev Christian <[log in to unmask]> wrote:
> Jack,
> NOT a boring subject. I am just surprised that your board supplier doesn't
> have a single matt finish solder mask in production. THAT is strange, to my
> mind anyways.
> Bev
> RIM
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
> Sent: Wednesday, August 18, 2010 11:50 AM
> To: [log in to unmask]
> Subject: Re: [TN] Matte Mask and SolderBalls
>
> That's what seems so strange to me.
> Everyone lists plenty of advantages for matte mask, no one presents any
> downside to using them (except personal preference for shiny boards in
> marketing photos?) and yet the fabricators don't have them, at least not
> without costly change-overs and extra processing. I still think I must be
> missing something....
>
> oh well, sorry to clog the TechNet with a boring subject,
>
> Jack
>
> .
> On Tue, 17 Aug 2010 09:56:30 -0500, Nigel Burtt <[log in to unmask]>
> wrote:
>
> >Matt soldermasks in my experience always reduced the incidence of solder-
> >balls at wave and selective solder when we could alter from semi-gloss or
> >glossy. They also helped reduce the incidence of stubborn PCB design
> feature-
> >related solder bridges. With no-clean fluxes, the residues are often less
> >obviously visible too. A side benefit is that operators working on the
> PCBs
> >especially for any close visual inspection will experience less eye-
> strain/fatigue
> >than with shiny/glossy boards.
> >
> >PCB suppliers usually want to stick with a limited number of different
> masks,
> >preferably one, throughout their factory. So to change for you will
> require
> >some leverage to other customers, or extra cost.
> >
> >One response might be... OK the PCB supplier wants to charge an extra 3%
> >but we save 3+x% in rework costs and improved operator health benefits,
> >meanwhile we work on the supplier to move to our preferred mask at 0% cost
> >increment.
>
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