Electronics Forum | Wed Jun 22 14:14:42 EDT 2005 | Steve
Tin/Lead we have had no problem in masking off areas on a pcb during wave soldering. Lead Free alloys, Nickel Silver Copper would there be any compatability issues with a Peelable latex solder mask containing Ammonia. Really hot need to know.
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 | Fri Nov 09 11:22:43 EST 2001 | denis
We are a contract manufacturer and we do business with a big company. There is a mistake in the design of the PCBs they are supplying: the pads are too long (under the component) and sometimes we get short circuit we cannot see. Changing the design w
Electronics Forum | Wed Jun 22 16:11:13 EDT 2005 | Steve
You know Pat, I should just call you directly rather than post this stuff. You always have an answer. You must have been around awhile huh? :)
Electronics Forum | Sun Oct 27 22:37:34 EDT 2013 | hqew2013
User Preferences > Display and check the Draw positive soldermask box. pcb.hqew.net/
Electronics Forum | Tue Feb 19 19:36:21 EST 2002 | davef
You weren�t clear but I assume the problem is not widely distributed and affects only a few parts on each board. Do this trick: * Cut a ~1� piece of fairly serious wire, like 18 or 12 AWG. * Strip the insulation. * Gear-up with gloves, glasses, and
Electronics Forum | Thu Aug 27 21:59:56 EDT 1998 | Xingsheng
Hi, Friends, Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! Have a good day Xingsheng
Electronics Forum | Mon Sep 24 11:28:55 EDT 2018 | etmpalletguy
Use a solder pallet, the pallet will mask off the locations required, thus eliminating the need for any kind of masking!! You've eliminated the need to apply, but you still have to peel off, not much of time saver. Pallets can be used for batch or s
Electronics Forum | Tue Jan 15 10:53:18 EST 2013 | boriskilk
We wouldn't advocate extending the soldermask beyond the component body but yes to ganging for fine pitch. To ensure we don't run into issues with flaking our preference is not to add solder mask when the space between pins is less than 6 mil.
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
