Hey Werner-

    I was also told that above 670F that the flux vaporizes, leading to problems with tip tinning.  Anybody
heard similar (or dissimilar) information?

Ryan Jennens
Phoenix Engineering

Werner Engelmaier wrote:

> Hi Nick,
> The hotter the soldering iron the faster the soldering operation. Contract
> assemblers get paid by the piece, ergo higher iron temperatures. The down side
> is, that these high manual soldering temperatures put the highest stresses
> into your PTH/PTV interconnect structures and can cause PTH/PTV barrel
> cracking and innerlayer interconnect separations (post separations); I have
> been an expert witness on a number of litigations resulting from this.
> I would recommend specing a lower soldering iron temperature to your contract
> assembler.
>
> Werner Engelmaier
> Engelmaier Associates, L.C.
> Electronic Packaging, Interconnection and Reliability Consulting
> 7 Jasmine Run
> Ormond Beach, FL  32174  USA
> Phone: 904-437-8747, Fax: 904-437-8737
> E-mail: [log in to unmask]
>
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