Electronics > Projects, Designs, and Technical Stuff
Vapour phase Soldering
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wraper:
mrpackethead:

--- Quote from: IconicPCB on January 20, 2015, 10:30:25 pm ---Main problem with vapour phase is tombstoning due to an imbalance of thermal properties of the design.

This is assisted by slightly more inert atmosphere in the vapour cloud compared to IR/ convection oven.

I am presently looking at a new  USD6000 vapour phase unit  versus a laser soldering robot for those pesky double sided jobs.

--- End quote ---

What machine is $6k, i'm curious.  A Laser won't do a BGA very well though.
IanB:
Granted that the condensing inert vapour might be the "best" solution, but in other circumstances ordinary forced convection ovens are found to provide more even heating than radiant heating or natural convection. So I am wondering if a fan convection oven using temperature controlled hot air might be a less expensive and less complex compromise?

Sometimes the best can be the enemy of the good...
mrpackethead:

--- Quote from: IanB on January 20, 2015, 11:30:27 pm ---Granted that the condensing inert vapour might be the "best" solution, but in other circumstances ordinary forced convection ovens are found to provide more even heating than radiant heating or natural convection. So I am wondering if a fan convection oven using temperature controlled hot air might be a less expensive and less complex compromise?

Sometimes the best can be the enemy of the good...

--- End quote ---

Yup, but thats going off topic.
jeremy:

--- Quote from: IanB on January 20, 2015, 11:30:27 pm ---Granted that the condensing inert vapour might be the "best" solution, but in other circumstances ordinary forced convection ovens are found to provide more even heating than radiant heating or natural convection. So I am wondering if a fan convection oven using temperature controlled hot air might be a less expensive and less complex compromise?

Sometimes the best can be the enemy of the good...

--- End quote ---

I disagree that it is more complex. As you can see from the various links in the thread, all you need is a big test tube, an electric kettle and a variac. No PID, nothing. The only problem is the cost of Galden.

I am of course talking about homebrew style though.

Also, I just got a quote back for the IBL minilab. > $25k with no Galden included :(
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