Electronics Forum | Fri Feb 24 06:49:59 EST 2006 | billyd
The really crazy part is, the way the Europeans wrote up the law, it holds the retailers responsible for getting rid of, and not possessing, leaded devices. They're the ones left holding the bag when things don't happen as they should. They get fined
Electronics Forum | Fri Feb 24 10:00:51 EST 2006 | Board House
Hi Russ, Just a quick note to you the assembly houses, You say your transition will be the easiest, I would have to beg to differ after working with several CM's and working with there Wave solder lines and finding compatibale fluxes that will work
Electronics Forum | Fri Feb 24 10:14:13 EST 2006 | russ
I agree. When I said the easiest I am talking about resource and effort. I have seen our custmoers working on B.O.M. and AVL for in excess of a year with multiple people. We have been running SMT pbfree for 2 years now and it actually has been eas
Electronics Forum | Fri Feb 24 13:49:09 EST 2006 | stepheniii
About 8 years ago when I looked up IC data sheets, I would find the reflow temperature tolerance data for them. (i.e. can withstand 280C for 180 seconds or whatever) I wasn't looking for that info at that time but noticed on at least some data sheet
Electronics Forum | Thu Feb 23 18:05:53 EST 2006 | kennyg
What are some general guidelines for the minimum proximity of apertures to a stepdown on a stepped stencil. I have a step from 7 mils to 5 (one mil step each on the top and bottom). How far does the step need to extend beyond the apertures on the
Electronics Forum | Fri Feb 24 08:29:25 EST 2006 | davef
Step stencils are not widely used, due to: * Higher cost as compared to uniform thickness stencils * Danger of solder paste smearing at least close to the steps * Difficulty of cleaning the stepped stencil underside (the steps cannot be on the upper
Electronics Forum | Fri Feb 24 12:34:13 EST 2006 | Ticky Ticky Tembo No Sarimbo Hari Kari Bushkie Perry Pem Do Hai
Stepped stencils are usually the result of some dumb customer's requirement. 2 examples I can give: 1.) Customer demanded 50% wick-up the termination of a MELF component. No way you can get that from reflow. Played around with a drastic "step up
Electronics Forum | Thu Mar 02 23:21:59 EST 2006 | KEN
I recently finished analysis of no-clean fluxes and Ionic contamination and cleaning processes. The results were eye opening. Summary: If you clean a no-clean you better do a good job. Many no-cleans produce a "waxy binder" to encapsulate the tro
Electronics Forum | Mon Feb 27 06:42:37 EST 2006 | Slaine
What are the long term issues with high tin content solders on parts plated with silver over copper? Is it possible that the silver will be absorbed by the solder then over a long period of time the tin will react with the copper causing it to part
Electronics Forum | Mon Feb 27 17:08:08 EST 2006 | barryg
we here are setting up our lead free process. Was curious about how others handle these issues. 1) Do you physicaly segregate leaded from non-leaded (different storage areas, shelving) for part storage? 2)Do you have a seperate board washer just for
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