Electronics Forum | Sat Apr 15 09:07:22 EDT 2006 | samir
Amol, We pulled off this "hybrid profile" with a leaded solder paste. We recently got our tensile test report results, and our Pb-Free BGA / Pb Paste sample broke off during tensile tests at the pad/substrate interface, and not the joint. This ind
Electronics Forum | Mon Jun 12 13:08:20 EDT 2006 | jbrower
Howdy Bolos, My question to you is why do you feel the need to buy new equipment? We've changed over our processes to lead free and used our existing equipment. Heller 1500 (5 zone convection reflow) Electrovert econopak (wave solder) Honestly we hav
Electronics Forum | Mon Aug 14 11:09:09 EDT 2006 | Baer
You can contact Graphic Research and Brad Koor will tell you that his maintenance is actually less. He has been running MS2 for a year and a half (he was the first production beta). His people know how to maintain the process which is not hard but mu
Electronics Forum | Wed Sep 06 11:34:15 EDT 2006 | slthomas
I don't remember ever having that problem with my EKRAs, but you might look at how much fluid you're dispensing on to the cleaning medium if this is occurring while you're using wet cleaning cycles. It could be getting saturated to the point of weakn
Electronics Forum | Fri Mar 16 01:26:31 EDT 2007 | CHITRA K
Many thanks for your reply. We would like to clarify two things; 1. We have recently purchased a vision system with oblique viewing facility to rotate the camera with 40x magnification, which we find useful to inspect fine pitch components . 2. Wh
Electronics Forum | Wed Jun 13 15:56:35 EDT 2007 | ck_the_flip
I experienced this with a high-mass capacitor. I was able to turn down the bottom-side convection (around 50�C lower than each of the top-side heaters), and able to NOT lose any parts. I got the bottom-side part just slightly over liquidus, and min
Electronics Forum | Fri Jul 13 16:52:24 EDT 2007 | jmelson
warning - not all stainless steels are non-magnetic! Quite a few alloys are magnetic, some as highly magnetic as ordinary steel. One quick test is to demagnetize the jaws. If you can find one of the old-style Weller soldering guns with the copper
Electronics Forum | Fri Jul 13 11:33:54 EDT 2007 | realchunks
Just starting and already responsible for product quality and machine adjustment? Wow, you poor bastard. Ok, I will assume this problem happens on the bottom side of the board with a thru-hole IC. The short occurs on the side that doesn't have the
Electronics Forum | Tue Jul 24 08:44:17 EDT 2007 | rgduval
Ron, I'd agree that that sounds high. Some things that may be contributing to it: Volume. lower build quantity often leads to higher placement costs. NRE. Does this website quote an NRE for solder stencils, machine programming, and reflow profili
Electronics Forum | Fri Feb 22 14:22:07 EST 2008 | stevek
Are you using nocleans, especially when you get to SMT? Years ago, I had OA wave flux get into vias that were plugged from the top under parts. It is really difficult to clean small, high aspect ratio vias. Cross sections showed that the copper in
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