wrote: > I have an aide doing some soldering for me. I found an excellent video on= youtube that showed really good techniques on how to solder small surface m= ount components by applying solder to one side of the pads first then with s= older on the tip you simply touch the soldering iron to the junction of each= pad and component. > =20 > Friday this was working great. We had and have the soldering iron at 343C= (suggested 650F). The tip was staying shiney and silver. Today the solder= is turning a dull grey and seems to be oxidizing. Any suggestions? Oh and= we're using a flux pen. > =20 > Thanks > =20 > PS > the video is http://www.youtube.com/watch?v=3D3NN7UGWYmBY --Apple-Mail-1--916661679 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8

Some lead free solders will strip the plating off of some non-pb-free-compatible irons and tips.

Also, even if the plating is not stripped there can be problems as the lead free solder dissolves all the lead tinning from an iron meant for lead/tin. Oxidation, or what looks like it results.

Jjust one set of possibilities.

Phil

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On Jul 16, 2012, at 10:03 AM, Rob Butts <r DOT butts2 AT gmail DOT com> wrote:

I have an aide doing some soldering for me. I found an excellent video on youtube that showed really good techniques on how to solder small surface mount components by applying solder to one side of the pads first then with solder on the tip you simply touch the soldering iron to the junction of each pad and component.

Friday this was working great. We had and have the soldering iron at 343C (suggested 650F). The tip was staying shiney and silver. Today the solder is turning a dull grey and seems to be oxidizing. Any suggestions? Oh and we're using a flux pen.

Thanks

PS
the video is http://www.youtube.com/watch?v=3NN7UGWYmBY

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