Electronics Forum | Thu Oct 28 11:50:11 EDT 2010 | phase1
We are having a little trouble with what appears to be a crystalization between our fine pitch parts. The problem appears after a a thourough wash of the pcb when dry. It looks like lead wiskers/haze between the joints.We are using water soluable lea
Electronics Forum | Wed Jun 29 16:28:06 EDT 2011 | rway
Let's be more specific. Why do you need to clean the boards? I assume it is for testing purposes, probe contact concerns and the like. This is the only economical reason I can think of to clean no-clean flux residue from your assemblies. Before y
Electronics Forum | Tue Jul 05 13:11:46 EDT 2011 | markhoch
Hi Bill, I agree with not cleaning the no-clean. If you're looking for a cleaner because one of your customers is requiring no residue be left on the PCB's, I'd investigate switching to a Water Soluable Process for those specific assemblies. (You'll
Electronics Forum | Tue Oct 04 04:47:04 EDT 2011 | grahamcooper22
Having a selective solder machine without a preheat sounds ODD. Preheats are pretty important to drive off flux volatiles and activate the flux so it cleans the parts ready for the solder to wet to them. If you have no preheat then you must be expec
Electronics Forum | Sun Nov 13 12:26:23 EST 2011 | hasu
Hellou All, I am trying to figure out which one to buy, Miele 6002 or PBT Compaclean. Usage - washing assembled pcb's, app. 2500-3000pcs per month. http://www.mieleprofessional.co.uk/gb/professional/product/104_2987.htm http://www.asi-tech.co.il/?
Electronics Forum | Mon May 07 16:07:05 EDT 2012 | davef
Start with targets based on the stencil thickness (for height) and stencil thickness times the aperture size (for volume). * Set reasonable upper and lower control limits (+ 25% and –25 % of the targets, for example). * Next, check the printer set-u
Electronics Forum | Wed May 09 03:13:06 EDT 2012 | umar
I had send my coating board to the test lab for adhesion coating test. 3 times send, the result 3times fail. The coating chemical use is Humiseal 1B31. The process is clean the boards at washing process use the Vigon A200 saponifier mix with DI wate
Electronics Forum | Mon Jun 25 03:52:24 EDT 2012 | awtm
Our Customer had detected tarnished pad on ImAg PCBA and had conducted several SEM-EDX test at the soldermask below some of the chip resistors. High concentration of sulfur was found and it can be significantly reduced after further chemical cleaned
Electronics Forum | Thu Jul 12 11:56:20 EDT 2012 | hegemon
You might try to complete all your soldering within a 72 hour or less time frame. For all intents treat your board like a moisture sensitive component after you have baked and completed SMT reflow. Wash, blow dry, and go direct to stuffing and com
Electronics Forum | Mon Feb 11 15:15:09 EST 2013 | rgduval
I'm working on installing a batch washer, and am looking into water heaters to support the cleaning process. I'll be installing a DI system, and I know that stainless steel tanks are needed due to the corrosive nature of DI water. My DI system inst