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Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Washable Soldermask on PWB

Views: 1106

#57929

Washable Soldermask on PWB | 2 February, 2009

Is anybody using H2O washable solder mask that comes on the PWBs you get from the fab vendor? I am researching PWB vendors that can provide this service.

Thanks.

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#57933

Washable Soldermask on PWB | 2 February, 2009

With most folks using closed loop DI beds on their cleaners, water soluble masks have fallen out of favor. Tends to gum up the works.

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#57934

Washable Soldermask on PWB | 2 February, 2009

Yes, thanks, I heard that, but also heard there are some formulations that are closed-loop filtration media friendly.

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#57939

Washable Soldermask on PWB | 2 February, 2009

Probably the three biggest players for screenable, water soluble temporary soldermasks are Techspray, Chemtronics and Kester/Techform. What do they say?

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#57943

Washable Soldermask on PWB | 2 February, 2009

Thanks Dave. I did find one PWB fab that does offer it pre-applied to the boards, Saturn PCB. I'm told the formula is proprietary but is WS. Not sure if its CL friendly though.

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#57950

Washable Soldermask on PWB | 2 February, 2009

Our supplier told me that TechSpray does no longer manufacture their water soluble mask. I dont know is that truth or not...

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