Electronics Forum | Mon Jul 10 21:01:06 EDT 2000 | Dave F
Edmund: Responding to your questions: 1 What is purpose of using DI water to wash a PCBA? Compared to tap water, DI water is less likely to leave: � Metal cations on sensitive components. � Salts of Ca, Mg, and other stuff on metals on the assemb
Electronics Forum | Thu May 18 08:12:22 EDT 2006 | marc
smt You should have no issue using your exsisting oven for both leaded and lead free materials if the machine is capable of delivering the desired profiles. One aspect that makes a "lead free" oven is the design of the system. Ability to reach th
Electronics Forum | Sun Oct 09 21:44:12 EDT 2005 | Eskay
If the solder in the pot is to be replaced, the cost is very high. Is there any methods that could control the lead content to be low 1000ppm? Any methods what if the content is exceeded 1000ppm?
Electronics Forum | Thu Nov 03 12:48:14 EST 2005 | Rosewood
We have some no sticks, but that is actually a good thing because we have NSD. During process control audits we found that pull strengths to the board dropped off. We build a military application that requires higher bond strenghts. Low pull streg
Electronics Forum | Mon Nov 13 14:58:56 EST 2017 | davef
Determine the origin of the solder * Sloppy paste printing technique * Lax stencil underside cleaning practices * Sloppy misprint cleaning practices * Poor part placement practices creating solder balls * Poor material control allowing solder p
Electronics Forum | Fri Mar 31 23:19:37 EDT 2017 | clcte01
International Confederation of Contamination Control Societies (ICCCS) is keep attention to the world's cleanroom economic and technology industry development in the recent year. What i know one cleanroom exhibition in Guangzhou, China. They are dev
Electronics Forum | Thu Apr 13 22:22:58 EDT 2017 | clcte01
International Confederation of Contamination Control Societies (ICCCS) is keep attention to the world's cleanroom economic and technology industry development in the recent year. What i know one cleanroom exhibition in Guangzhou, China. They are devo
Electronics Forum | Tue Feb 09 16:04:06 EST 2010 | frankalbiter
Hi there, From the ISO 13485: 2003 std. standpoint, there is a special requirement which states: "The following requirements shall apply. d) If appropriate, special arrangements shall be established and documented for the control of contaminated or
Electronics Forum | Mon Feb 19 11:45:09 EST 2001 | sallyt
We are using a �spray� type stencil cleaner and hot DI water to clean water washable solder paste. I want to use the stencil cleaner to also clean misprinted PCBs. However, we consistently find solder balls on side A of a double-sided misprint. We
Electronics Forum | Mon Feb 19 13:21:01 EST 2001 | billschreiber
Thank you for giving me an easy one. Cleaning populated PCBs in a stencil cleaner can be a nightmare! Please see my response to the question by MartyS on "Fine-pitch Apertures". If this doesn't answer your question, let me know.
