29 May '13, 7pm

Reflow soldering improved with carbon dioxide - This is exactly what it looks like. [Oleg] calls it soldering in i...

Reflow soldering improved with carbon dioxide - This is exactly what it looks like. [Oleg] calls it soldering in i...

This is exactly what it looks like. [Oleg] calls it soldering in inert atmosphere , but it’s just a toaster oven reflow hack dropped into a container full of carbon dioxide. Why go to this trouble? It’s all about solder wetting. This is the ability of the molten solder paste to flow into all of the tinned areas of a board. [Oleg] talks about the shelf life of hot air leveled PCB tinning, which is about six months. After this the tin has oxidized. It will certainly not be as bad as bare copper would have, but it can lead to bad solder joints if your PCBs are more than about six months off the production line. This is one of the reasons to use solder flux. The acid eats away at the oxidized layer, exposing tin that will have better wetting. But there is another way. Soldering in the absence of oxygen will also help the wetting process. CO2 is heavier than air, so placing the...

Full article: http://hackaday.com/2013/05/29/reflow-soldering-improved-...

Tweets

We passed the 400ppm carbon dioxide milestone earlier this month. Why wasn't there a media storm?

We passed the 400ppm carbon dioxide milestone e...

theecologist.org 31 May '13, 9am

The Mirror, with glorious abandon, ran with an offer for a free trip into space, and something about the long-running Savi...

Another Small Step for Reflow Battery: American Vanadium to market Gildemeister's CellCube in North America

Another Small Step for Reflow Battery: American...

spectrum.ieee.org 31 May '13, 7pm

Having already entered into a strategic alliance in the last year, the Canadian company American Vanadium and Germany's Gi...

Carbon Trust announces project to help cut the ...

renewableenergymagazine.com 30 May '13, 1pm

The Carbon Trust have announced a research project which is designed to help cut the cost of offshore wind power by increa...