Electronics Forum | Fri May 03 06:03:26 EDT 2002 | geoff_goring
Dave Many thanks for your very informative piece on SMT.com As we stand we have not yet 'seen' any problem. My issue is that we have ordered (LTB) a very large quantity of ASICS and our usage has taken a down-turn. We therefore need to keep the one
Electronics Forum | Thu May 09 17:16:16 EDT 2002 | davef
Russ makes a good point. While your profile probably meets your paste supplier recommendations, it may not be proper for the component. * Paste suppliers offer general recommendations for tin / lead interconnects. You need to modify that for board
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 Sep 17 17:09:32 EDT 2001 | jschake
Flux: No-clean pastes tend to have a wider print process window in terms of print speed and pressure. More importantly, no-clean pastes are more tolerant to changes in temperature and humidity. They also exhibit longer stencil life than water-solub
Electronics Forum | Thu Jul 22 22:18:12 EDT 2004 | davef
Notes from an AIM No-Lead Presentation ... Wave Soldering * May require a higher pot temperature than tin/lead: 255-265*C * May require a change in liquid fluxes to compensate for the poor wetting of some alloys and high thermal stresses of the wave
Electronics Forum | Mon Apr 17 16:17:47 EDT 2000 | Dennis Fall
Typically, Sn/Pb solders are used to preserve solderability on leaded and leadless SMT components. Are other finishes (such as those used in PCB manufacturing e.g. Sn, NiAu, OSP's, etc.) frowned upon by PCB stuffers and their customers? I am intere
Electronics Forum | Wed Jan 31 09:44:26 EST 2001 | BLNorman
I listed this under design, but got no responses, so I'll try this forum. Our current solder paste vendor wants us to evaluate a paste. One of the selling points is that this paste (SnPb) will have the same flux package that will be used with some o
Electronics Forum | Fri Sep 15 05:48:24 EDT 2000 | carsonho
Have any experience that Sn/Pb plated integrated circuit products will appear some rainbowbridge-like substance after exposing at conditions of 121degC, 100%RH and 15psi for 48hours or above? The rainbow bridge substance was analyzed by EDAX and fou
Electronics Forum | Fri Sep 15 05:48:11 EDT 2000 | carsonho
Have any experience that Sn/Pb plated integrated circuit products will appear some rainbowbridge-like substance after exposing at conditions of 121degC, 100%RH and 15psi for 48hours or above? The rainbow bridge substance was analyzed by EDAX and fou
Electronics Forum | Mon Aug 23 11:36:22 EDT 1999 | Phil B
| | We have a design on which there is an ASIC that will not be produced anymore in the future. As we want to make this design over the next 10 years we are evaluating the possibility to buy the necessary ASICs for the next 10 years. This will give u
