January 5, 2010
about 5 years ago
700F is the tip temperature. I agree all the things you mention will happen if one is not careful. The duration of contact is probably the most important factor.
The US Navy’s National Electronics Manufacturing Center of Excellence recommends tip temperature set between 343?C / 650?F and 371?C / 700?F for lead-free as opposed to 315?C / 599?F for tin lead solders.
Other industry sites mention even higher temperatures:
Have you folks given the K100LD a try? I have used this AIM Castin SnAgCu-Sb solder and I think K100LD wets better at a lower price. I do not know about the copper dissolution rates being touted by Kester for their K100LD. The AIM Castin may be better for production runs but for hand soldering the K100LD is great. I use a Metcal 700F tip for both. By the way, I am no way connected to Kester or AIM. I am just a happy customer :)
Until I am proven otherwise I think the Kester K100LD is the best lead-free solder ever ! it is cheaper than silver based solders and has the same shine as lead-solders to boot !!
I would love to hear about the pros and cons of the SAC, K100LD and other lead-free solders.
No public wish lists :(
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