There are results from trials on VPS in the LF Experience Report you can
download at www.smartgroup.org/experience/experiencereport2006.pdf
Also there is a short survey of users and what they had to say I did in
2006. This has been posted before when someone asked about VPS.
www.smartgroup.org/nepcon2006/bobwillisvp.pdf
Also survey results www.smartgroup.org/nepcon2006/vpssurvey2006.pdf
Just been using VPS on some POP BGA large dummy parts 25mm 1.6mm thick with
very good results.
Bev is right about possible fluid trap, I have had this on flexible circuits
on carrier frames fluid can be trapped between the two surfaces.
Many thanks
Bob Willis
2 Fourth Ave, Chelmsford, Essex, CM1 4HA England
Tel: (44) 1245 351502
Fax: (44) 1245 496123
Mobile: 07860 775858
www.ASKbobwillis.com
Book your place on Bob's "Step by Step Failure Analysis Workshop" 14th May
www.ASKbobwillis.com/faworkshops.pdf
New "Printed Board Inspection & Quality Control" 3 July
www.ASKbobwillis.com/PCBworkshop.pdf
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: 12 May 2008 14:24
To: [log in to unmask]
Subject: [TN] Vapor phase
Dear Technos,
I would like to get your expert opinion on the latest developments in
the vapour phase technology. The last time this topic has been discussed
here this was still an environmental hazard.
Here's the latest sales pitch:
Dear Convection Oven Users:
With Energy Costs Skyrocketing, You have a cheaper, efficient, and a
better yield Alternative!!
Low Operating Cost, 110 Volt Machine, Run Lead and Lead Free
Sequentially!!
High Yield, Run your Lead Free Boards at 230 Degrees Uniform Temperature
Distribution, No Circuit Board Delamination, Uses Environmentally
Friendly Teflon 2 Liquid No Hazardous Florocarbons!
The questions are:
* Are the advantages real, should I prefer vapour phase over
convection in day by day reflow operations, from the technical point of
view?
* Would the technology finally be environmentally friendly?
Thanks,
Ioan
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