Telecordia GR-78-CORE also covers friction contacts.

Just curious... I assume this application is for (a) a single connector to survive the insertion of 1000 boards (like a test set) and not (b) a single board to survive 1000 insertions.  If (a) it can be done, if (b) good luck.


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Robert F. Bagsby
Sent: Thursday, April 25, 2013 12:47 PM
To: [log in to unmask]
Subject: Re: [TN] Gold Fingers for Edge Connectors - Design Criteria Needed

Hi Todd,

IPC-2221 series documents would be a good starting point.



Robert F Bagsby / Manager, Project & Technical Services / Projects, 
Technical Services & Lean 
MS 130-108, Cedar Rapids, IA, 52498, USA
Phone: 319-295-8703 / VPN: 295-8703 / Mobile: 319-573-6859 
[log in to unmask]
www.rockwellcollins.com 




From:   "MacFadden, Todd" <[log in to unmask]>
To:     <[log in to unmask]>
Date:   04/25/2013 11:38 AM
Subject:        [TN] Gold Fingers for Edge Connectors - Design Criteria 
Needed
Sent by:        TechNet <[log in to unmask]>



Hi everyone,

We have a new application that will require thousands of insertions on 
edge connectors such as you might find on mother board interconnects. This 
is new to us so we don't have experience or design rules yet.

Are there industry guidelines/requirements for: (1)  plating thickness and 
performance of hard nickel and hard gold for these types of edge finger 
connectors; (2) edge chamfer design; (3) finger spacing, etc.

I have seen several good supplier-specific design guidelines for edge 
fingers, but no industry standards yet. I know only of MIL-G-45204 for 
hard gold plating; is that useful in this application?

Thanks in advance for any insight.
Todd








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