Hi Todd, I just off line explained to Leland that in some parts of the World
you would run into issues.
In Thailand I had an assembly on silver which the vendor built to shortage
level on the first side, sat them on the shelf for less than a week, went to
assemble the other side and experienced extensive de-wet due to the silver
finish having been attached by air pollution.
John Burke
(408) 515 4992
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Todd, Richard
Sent: Friday, August 10, 2007 2:56 PM
To: [log in to unmask]
Subject: Re: [TN] OSP Processing Recommendations
Wow, John. I would love to use those criteria. Realistically (for us, at
least), we have found through experimentation that no more than 10 days
between the 2nd reflow cycle and wave soldering yields acceptable quality.
Of course, the less time the better.
Regards,
Rick Todd
Senior Engineer
Panasonic Automotive Systems
(770) 515-1087 ext. 1087
(678) 458-2887 cell
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of John Burke
Sent: Friday, August 10, 2007 5:52 PM
To: [log in to unmask]
Subject: Re: [TN] OSP Processing Recommendations
I would say within 2 back to back 8 hour shift cycles (or 16 real time
hours) which is what I use as a rule of thumb for both OSP and silver.
John
John Burke
(408) 515 4992
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Leland Woodall
Sent: Friday, August 10, 2007 2:37 PM
To: [log in to unmask]
Subject: [TN] OSP Processing Recommendations
Everyone,
What is the maximum recommended time to complete all reflow and wave
soldering cycles on product that is coated with OSP?
I'm trying to establish a guideline for my facility and can't seem to
find a lot of related information on this subject.
Thanks in advance for your input!
Leland Woodall
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