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From: | |
Reply To: | Leadfree Electronics Assembly E-Mail Forum. |
Date: | Wed, 7 Jul 1999 08:18:58 -0400 |
Content-Type: | text/plain |
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David:
Obviously there is a point (more like a cliff edge) where any component will
fail. I have internally asked our reliability department to come up with an
assembly "not to exceed" profile (maximum ramp/cooling rate and maximum
time/temperature etc) that could be used as boundary conditions for this
project.
The comment that came back was that this is "IMPOSSIBLE" considering all the
different packages/materials used for IC's and Discretes.
Maybe this is the time to consider the elimination of the solder assembly
process?
Peter Brooks
-----Original Message-----
From: David Suraski - AIM [SMTP:[log in to unmask]]
Sent: Wednesday, July 07, 1999 7:36 AM
To: [log in to unmask]
Subject: Re: [LF] Component reliability at higher soldering
temperatures
Are there any component manufacturers involved in this forum who could
comment on the issue below (and others)?
Thanks,
David
-----Original Message-----
From: Charbonneau, Richard A <[log in to unmask]>
To: 'David Suraski - AIM' <[log in to unmask]>
Cc: 'Seelig, Karl (AIM solder)' <[log in to unmask]>
Date: Tuesday, July 06, 1999 6:55 PM
Subject: Component reliability at higher soldering temperatures
>re: recent posting to IPC Lead-free forum
>
><edited>
>
>we have found that most components can withstand this extra heat w/no
>degradation to their reliability....
>
>David, I would like to respond to your comment.
>
>The feedback that we are receiving from our supplier base is that the
higher
>soldering temperatures (even the lower 240 peak profile)is a
reliability
>concern for a wide range of purchased parts including film capacitors,
>switchs, relays, connectors, crystals, hybrids and optoelectronic
devices
to
>name a few.
>
>regards,
>
>richard charbonneau
>
>
>
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IPCWorks -October 25-28 featuring an International Summit on Lead-Free Electronic
Assemblies.
Please visit IPC's Center for Lead-Free Electronics Assembly
(http://www.ipc.org/html/leadfree.htm ) for additional information.
For technical support contact Gayatri Sardeshpande [log in to unmask] or 847-790-5365.
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