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November 2005

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Subject:
From:
Phil Zarrow <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Thu, 10 Nov 2005 16:42:55 EST
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Dan
Theoretlically, you can use your 5 zone oven.  FIgure on, ballpark, about 20
- 25% less through-put for the lead-free profile with the higher thermal
excursion, depending upon whether you prefer to use a straight-ramp or "classic"
ramp-soak-spike profile.

The best way to tell is to take a typical lead-free profile from a lead-free
supplier spec and attempt to profile your most complicated PCBAs to that
profile.  If you can do it with your existing 5 zone, albeit at a slower conveyor
speed, you're home free.  If not, it might be time to go shopping.

You better believe that the oven and wave-solder manufacturers are seeing a
"Y2K" effect with respect to 7-1-06.

Phil Zarrow
ITM Consulting
Durham, NH  USA
603 868-1754
www.ITMconsulting.org

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