Electronics Forum: mask off (Page 4 of 35)

blocking off stencil apertures with tape

Electronics Forum | Wed Oct 10 20:35:17 EDT 2001 | djarvis

Stephen, I don't understand this at all mate. 1. If you don't place a QFP and get bridging across the bare pads, you were gonna get absolutely horrendous bridging if you did put one down. That points to poor printer set up or stencil design or both

Re: no-clean mask for gold fingers

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

Re: no-clean mask for gold fingers

Electronics Forum | Mon Jan 25 21:43:04 EST 1999 | Dave F

| 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

Re: no-clean mask for gold fingers

Electronics Forum | Tue Jan 26 19:43:02 EST 1999 | Ross Berntson

| 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

Re: no-clean mask for gold fingers

Electronics Forum | Tue Jan 26 19:43:26 EST 1999 | Ross Berntson

| 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

Immersion Silver Reliability / Peelable mask

Electronics Forum | Wed May 26 03:04:09 EDT 2004 | johnwnz

Mark, that would be a good report to have a look at can you post it on the site or mail it out to me? Also I've been having an issue with blue peelable solder mask on silver boards where it peels the silver off with it. I've only seen this since my v

Re: no-clean mask for gold fingers

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

Epoxy for solder mask touch up

Electronics Forum | Mon Nov 08 17:47:58 EST 2004 | davef

Russ: On "usually get some mask material from our board house. It cures with heat so it works really well in our applications.": We're unsure about the type of mask that you are using, but be careful [we used to do this, also]: * Final cure of the L

Re: no-clean mask for gold fingers

Electronics Forum | Sun Jan 31 23:03:57 EST 1999 | Dennis O.

| | 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

Re: mask finish and solder balling

Electronics Forum | Sat Feb 20 09:56:22 EST 1999 | Tufty

| We are in the process of getting into no-clean paste and fluxes. One important issue in this is sodler balling. I have heard some people say that having a matte finish would help in having lesser solder balls and that the solder balls would not b


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