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May 2011

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Subject:
From:
Jack Olson <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Jack Olson <[log in to unmask]>
Date:
Thu, 12 May 2011 14:38:23 -0500
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We have a high power application where the engineers want to use press-fit
components that are like metal blocks with a grid of pins underneath that
need to be  smooshed into the board. You can see a picture at
http://frontdoor.biz/PCBportal/wurth.jpg

The manufacturer gives enough data about insertion force and max torque and
all that, but it just got me wondering... some of these devices have 36 pins
and at 250 N per pin (max) this seems like a lot of pressure. Can boards be
damaged by so much pressure? (assuming we prevent warping). Seems like there
would have to be some limit to compressive force on laminate, but I've never
heard anyone mention it.

Jack


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