Hi ya'll!

I got some general questions about vapor phase reflow. I went back and looked 
at all the responses to Jason Gregory's (no relation...that I know of anyway) 
question about vapor phase reflow.

We may get some business that will require it. It's for oil well downhole 
boards that will be soldered with a SN96/AG04 solderpaste. I've got a 10-zone 
Conceptronics oven that I can create a profile that will reflow the paste, 
but I don't think it will do it in a manner that won't cook the parts. With 
vapor phase, you can get the board down in the vapor, reflow the solder, and 
get it back out before the parts fry...

The liquidous for the SN96/AG 04 is somewhere between 221º - 229º C., so the 
regular Fluorinert (FC-70) won't work as it's boiling point is 215º C. I 
checked on the FC-71 and it's boiling point is 253º C....so that looks like 
the one I should use.

Problem is, don't know where to get it. I've called 3-M and left a message, 
but haven't got a call back yet...

This all is just in the planning stages now...we haven't got the business 
yet. But I'm being asked what it will take for us to have vapor phase 
capabilitiy. I've been web searching and mostly what I've found on the NET is 
used equipment, Centech, HTI, Baron Blakeslee....who makes new vapor phase 
equipment now? Also, what kind of ball-park figures will we need to spend for 
a decent vapor phase unit?

If anybody knows, what kind of money (per gallon) are we talking about for 
FC-71? There will also be a secondary chemical that we'll need to use to 
contain the FC-71 won't there? Or has the equipment technology advanced 
enough so a secondary chemical isn't needed? I rememember using freon the 
last time I worked with a vapor phase unit.

As usual, thanks a lot!

-Steve Gregory-

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