On 9 Apr 2015 at 13:27, Steve Gregory wrote:

> Hi All,
> 
> I'm wondering if I'm the only who is getting slammed by salespeople who are
> pushing this new GC10 solder paste from Loctite?
> 
> I know the proof is in the testing and qualifying, but they are making some
> pretty hefty claims about this paste, like you can leave it on the stencil
> for 3-days, or that you don't have to refrigerate it and it has a year
> shelf life.

OK, maybe this works fine, why not?

I had in earlier days long before lead-free a solder paste from 
Alphametals (something with ... 390... RMA) which could be left open 
for days. I made prototypes with this paste down to 0.65mm pitch. One 
day dispensing or screen printing, next day manual pick and place, 
next day reflow soldering, and yes, cleaning was mandatory, but the 
results were perfect. And this paste was even fine 1 year after 
expiration date and after 1/2 year out of the fridge... just stir 
well and fine.... no black magic, but, maybe a bit harder to achieve 
nowadays with lead-free.

Regards
Matthias
--
Matthias Mansfeld Elektronik * Printed Circuit Board Design and 
Assembly
Neithardtstr. 3, D-85540 Haar, GERMANY
Phone: +49-89-4620 0937, Fax: +49-89-4620 0938
Internet: http://www.mansfeld-elektronik.de
OpenPGP: http://www.mansfeld-elektronik.de/gnupgkey/mansfeld.asc
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