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June 2006

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TechNet E-Mail Forum <[log in to unmask]>, Hfjord <[log in to unmask]>
Date:
Wed, 21 Jun 2006 19:58:23 +0200
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Phil,

we've been using SMT many, many  years for MIL applications, such as radar,
and applications for tanks, missiles and other jumping, vibrating and and
shaking stuff. We perform nasty vibraion and shock tests, and to my
knowledge no problems have been reported the last 10 to 15 years. The most
advanced connectors have 600 pins! So, generally spoken, SMT connectors do
well with SnPb.

Ingemar Hernefjord
Ericsson Microwave Systems


----- Original Message -----
From: "Phil Nutting" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, June 08, 2006 3:36 PM
Subject: [TN] Connectors - Surface Mount versus Thru-hole


Good morning colleagues,

This is a question of robustness.  I have 3 and 4 pin connectors with
0.045" square pins that are on 0.156" centers.

I have a choice between SMT and PTH versions.

I see the SMT connectors more manufacturing friendly, but I'm concerned
I will meet resistance in using these as there is the belief that they
will not withstand handling shock in the finished product, a shoe box
sized device that is shipped via UPS, DHL or FedEx.

What sage wisdom do you have to share?

Phil Nutting

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