Hi Brian,
A soldered contact is not designed for press-fitting (ie compliant
press-fit pin).  You will not form a gas tight seal between the pin and
the hole/barrel wall even though the pin is tight.  The pin might even
fracture the barrel causing an open or longer term intermittent/open.  I
would not use your application for class 2 or class 3.


I have had no problem press-fitting a compliant press-fit pin (connector,
180 pin) in to a ENIG plated barrel/board.  As long as you specifiy the
PTH tolerance recommended by the press-fit pin manufacturer.

Kerry





Kerry McMullen
Principal New Product Mfg. Engineer
LTX Corporation
825 University Avenue
Norwood, MA 02062-2643
(T) 781-467-5468
(C) 508-631-1832
(F) 781-461-0993



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[TN] Press Fitting Soldered Contacts Into ENIG







Good morning all,
      Are there any particular reliability concerns when press-fitting a
soldered contact (SN63) into a plated barrel with an ENIG surface? What
might the outcome of this be over the long term? Is this an accepted
practice? Would this be acceptable in a class 3 military application?

Thank you for your input.

Brian Guidi
Senior Product Engineer
Teledyne Printed Circuit Technology
Tel: (603) 889-6191  X:310
Fax: (603) 886-2977
E-mail: [log in to unmask]

Visit us @ http://www.tetpct.com

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