Electronics Forum | Mon Sep 20 13:04:25 EDT 2004 | davef
The Intel BGA Developer�s Guide [ http://developer.intel.com/design/packtech/ch_14.pdf ] says: 14.8.3.3 Plated Through Hole (PTH) Isolation Regardless of the technique used for the mounting pads shape or definition, isolation of the plated through h
Electronics Forum | Sat Sep 18 12:10:19 EDT 2004 | Steve Gregory
I have a question about solder masking via's in a BGA pattern, and want to see if I'm thinking correctly about this. This problem is kind of along the same line as Carol's problem earlier. I think it's a bad idea to leave the via's free from solder
Electronics Forum | Fri Dec 12 10:28:30 EST 1997 | David Syracuse
I am interested in locating a water soluble resist mask that does not leave a residue after wash and is easy to work with during the screen printing process. I have tried the Alpha Metals 110 and 220 solder mask and have found that it does not leave
Electronics Forum | Thu Dec 13 20:54:23 EST 2001 | davef
There is neither �nominal thickness� nor �is there a set maximum� for via masking. We use some of our vias as test pads. So, as you�d expect, we get rabid when we get mask bleed onto these pads. IPC-6012 - Qualification & Performance For Rigid Pri
Electronics Forum | Tue Dec 14 11:17:45 EST 1999 | John Thorup
Hello Mike You'll have to be a bit more specific. Do you mean permanent solder mask like the normally green material or a temporary mask like the peelable/washable material? John Thorup
Electronics Forum | Fri May 15 19:08:25 EDT 2009 | jlawson
Ammonia based masks can create solderability issues after they are removed. You can get non-ammonia based latex mask material but down side is slower cure and cost a little more as they have higher levels of latex etc
Electronics Forum | Wed Jan 18 12:41:19 EST 2017 | emeto
Does anyone knows where I can buy these rubber cones? They work as masking - preventing the solder to adhere to through holes(rings) while wave soldering
Electronics Forum | Tue May 12 06:44:16 EDT 2009 | jhk71
We do a conformal coating for a customer with copper-nickel-gold pads on his board. The pads are masked prior to coating with a standard gel, containing ammonia. After thousands of boards, being processed like this, now the gold pads seem to be less
Electronics Forum | Tue Nov 10 12:47:06 EST 1998 | Dave F
| I have a need to dispense a latex masking material using an automated dispensing system. We are presently looking at the I&J750. Does anyone have any experience with this piece of equipment, or have a better solution available? | Doug: Fisnar m
Electronics Forum | Thu Nov 12 10:05:05 EST 1998 | Doug Clement
| | I have a need to dispense a latex masking material using an automated dispensing system. We are presently looking at the I&J750. Does anyone have any experience with this piece of equipment, or have a better solution available? | | | Doug: Fi
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