Electronics Forum | Wed Oct 26 10:40:43 EDT 2005 | patrickbruneel
Jimmy, We've been soldering tin plated components and Ni/Sn (100% Tin) boards with leaded solder in the 80's in hirel and military applications. We never experienced reliability issues with the mechanical or electrical properties of the solder joint
Electronics Forum | Fri Sep 02 05:41:51 EDT 2005 | Rob
Is your oven suitable for Lead free temperatures & can it achieve a decent profile across your complete range of boards? AOI will need to be looked at too as the joints are not as shiney. Cheers, Rob. PS. Where's Thisbie?
Electronics Forum | Thu Apr 20 22:46:26 EDT 2006 | samir
Amol, I thought I answered your question in another thread, dude! Anyway, to re-iterate. Yes, I was able to pull it off a hybrid profile. The LF BGA passed tensile testing, but no, it wasn't thermally cycled or stressed first to expose any latent
Electronics Forum | Fri Apr 07 11:19:55 EDT 2006 | muse95
Technically speaking, most likely yes it will work, unless possibly it is a BGA. There are issues surrounding BGA's. Here are some of the general issues: On any type of component, if the Pbfree solder you are using contains bismuth, then the Pb in
Electronics Forum | Mon Feb 12 10:02:18 EST 2007 | rgduval
A little late to the party here, sorry... Has the joint been verified as a cold solder joint? That is, visually confirmed that it looks like cold solder, and, perhaps, xrayed to confirm the solder status? X-raying may sound a bit extreme, but you'
Electronics Forum | Sat Apr 21 14:50:17 EDT 2012 | edmentzer
We are using SN100C in both our wave and selective machines and have very good results. We also using it for ROHS hand soldering. It flows better than SAC305, the joints are shinny just like Sn63/37. We are looking into using SN100C as our paste b
Electronics Forum | Mon May 14 17:12:20 EDT 2001 | davef
Continuing along the path that Brian took ... IPC-7525 gives design guideline for stepped stencils. It goes something like: * Stepped area SB GT 25 thou from pads located on the greatest thickness of the stencil * Pads in stepped area SB GT 35 tho
Electronics Forum | Thu Jun 25 18:28:23 EDT 1998 | Earl Moon
| Looking for articles/data comparing the quality/reliability of mass | reflowed SMT solderjoints versus hand soldered SMT solderjoints. As solder joint quality most often is subjective - that is visually compared with graphic examples, IPC is the B
Electronics Forum | Tue Sep 13 08:45:51 EDT 2011 | rgduval
Lead free solder does tend to resemble cold solder joints after processing. Generally, this is acceptable. The latest IPC 610 has pictures of acceptability of lead free solder joints, which you can use to compare to the joints that you are seeing o
Electronics Forum | Wed Sep 14 09:19:30 EDT 2011 | swag
Target those specific parts/leads with a thermal-couple and a mole and try to get the peak reflow temps up to 225 C. It's not a cure but it will improve the apperance of the solder joints.
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