Thank you, Richard.

Lots of good advice here. I really appreciate it.

Best regards,
RAYE RIVERA
Quality Manager

-----Original Message-----
From: Stadem, Richard D <[log in to unmask]> 
Sent: Thursday, February 6, 2020 1:33 PM
To: TechNet E-Mail Forum <[log in to unmask]>; Rivera, Raye <[log in to unmask]>
Subject: RE: Contact lubrication on edge connectors

The companies I work for do this routinely, even on small SIP- and DIMM-style edge connectors that plug into mating connectors on a larger CCA. It prevents the fretting that you are referring to, which is oxidation on the mating surface where the fretting has caused the gold to wear away, leaving (typically) the nickel underneath it exposed to oxidation.  I caution you to qualify the addition of the connector lube for compatibility and for electrical performance. It should only be used as a very thin film on the edge contacts only. I have even seen it applied only to SOME of the plug-in edge contacts, for example, power, ground, low-frequency analog or digital contacts, but excluded from very high frequency contacts due to the propensity of the lubricant to attract dust particles that provide an alternate path for signal crosstalk.

-----Original Message-----
From: TechNet <[log in to unmask]> On Behalf Of Rivera, Raye
Sent: Thursday, February 6, 2020 3:16 PM
To: [log in to unmask]
Subject: [TN] Contact lubrication on edge connectors

Hello Technetizens,

I'm investigating whether it makes sense to apply a connector lubricant to gold fingers on DIMM connectors and riser cards.  These are all small PCBs that plug into an edge connector with gold-plated contacts. The hope is to prevent those annoying failures that are "fixed" by removing and reseating the DIMM or riser card.

Does anyone have either experience with or advice on connector lubricants they would care to share?

Best regards,
Raye Rivera