Jorge, have you considered using a UV curable mask?

Russ Vertefeuille

Supplier Quality & Development Engineer

Honeywell International
Business, Regional & General Aviation
5353 West Bell Road
Glendale, AZ 85308

602-436-5434  Phone
602-436-7600  Fax
602-549-1417  Cell


-----Original Message-----
From: Jorge Rodriguez [mailto:[log in to unmask]]
Sent: Monday, January 21, 2002 11:46 AM
To: [log in to unmask]
Subject: [TN] WS Solder Mask for Stencil Applications


Fellow Technetters,

        I am looking for a water soluble solder mask that can be compatible
with stencil applications. We do quite a lot of solder mask applications
with a dispensing machine, but I am really looking into using a stencil
since it would speed up the process and help the ability to apply thinner SM
layers. I tried to do it with the one we use on the dispensing machines, but
it's too liquid and starts to cure at ambient temperature after 30 minutes,
so it was not possible.

        Ha anybody accomplished this? Would there be a special WS solder
mask for stencil applications?


        Any comments would be appreciated

Jorge Rodriguez
Process Engineer
Varian Electronics Manufacturing
615 South River Drive
Tempe, AZ 85281
Phone: (480) 968-6790 X 4258
Fax: (480) 829-4000
E-mail: [log in to unmask]

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