Electronics Forum | Wed Jun 22 15:03:12 EDT 2005 | patrickbruneel
The only thing ammonia can do is tarnish copper and make it more difficult to solder. And the higher temp in lead-free will discolor the latex (giving it a sticky surface), but the functionality of the mask will be intact. There should be greater co
Electronics Forum | Thu May 26 12:46:29 EDT 2016 | tombstonesmt
Good work! We have a product we've been using a table top latex masking robot we built in house to mask keep out areas. If we could apply what your doing we can eliminate the buffer of dry time on the masking. Any information you can provide on the
Electronics Forum | Fri Jul 31 09:46:12 EDT 2015 | tombstonesmt
Anyone?? Recently attempted using a PVA FC100 valve without luck. Works great until it clogs..
Electronics Forum | Tue Mar 21 20:33:09 EST 2000 | Dave F
Shane: We don�t dispense, but we have thought about it. Several points about peelable solder masks in a no-clean (low residue) process: � Beware of latex peelable solder mask with a low res process without extensive testing. The problem is usuall
Electronics Forum | Wed Jan 27 11:42:50 EST 1999 | John Zisa
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Wed May 26 06:59:10 EDT 2004 | davef
Some peelable solder masks attack immersion finishes. It appears components in the peelable soldermask, such as ammonia, are not very friendly to these particular surface finish. [We've wanted to investigate the effect of mask application thickness
Electronics Forum | Wed Oct 13 14:27:08 EDT 1999 | mikeh
Dave F, We are currently using a latex based ambient/thermal cure material that is applied by hand or automated dispensing equipment. Printing is an option for us, but we have not had much luck with this particular material. The mask is peeled off a
Electronics Forum | Sat Jan 23 16:07:20 EST 1999 | Steve Gregory
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Mon Jun 18 11:17:40 EDT 2001 | Howie
The adhesive type is the problem generally - latex adhesives used are not compatible with the silicone. Humiseal offer silicone compatible tapes & dots although they are quite expensive. I found a 3M product which is compatible with silicone based co
Electronics Forum | Wed Jan 27 20:34:13 EST 1999 | parag palshikar
| | hi, | | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier pr
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