Electronics Forum: systems 20c (Page 1 of 1)

Resistance value level of lead-free solder joint

Electronics Forum | Mon May 26 08:02:11 EDT 2003 | davef

Resistance: Tables of wire gauge often provide a resistance measure of some kind for each gauge. That way we can estimate the resistance of any length of wire we might be interested in. Calculating trace resistance is only slightly more complicated.

Solder wetting to ENIG pads

Electronics Forum | Tue May 13 08:26:29 EDT 2008 | davef

First, on your reflow temperature comment: The 183*C focus for reflow recipes for tin-lead solder is a falicy. If you held a recipe for tin-lead solder at 183*C peak, it would never reflow. Recipes for tin-lead solder need to be at liquidus plus 20*C

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