TECHNET Archives

April 2000

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Reply To:
Date:
Fri, 7 Apr 2000 18:01:22 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (76 lines)
Gary,
One more thing on contact lube. Gold on Gold system can also use contact
lube. It decreases friction and prevents freezing. If you wish to see the
property of OS-124 contact lube go to www.santovac.com for more information.
----- Original Message -----
From: "Gary Camac" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, April 07, 2000 7:03 AM
Subject: [TN] Contact Lubricant and Fretting Corrosion


> Good morning everyone,
>
> I had a couple of questions concerning the prevention of fretting
corrosion.  I am in the
> process of reviewing and updating some of our older process procedures.
At present the
> procedure on Lubrication of Connectors is setting in front of me and I
have managed to
> raise a few questions.  A search of the Technet archives and some old
memory banks have
> produced: gold to gold - its a good thing, no lubricant required: tin/lead
to tin/lead -
> its a good thing if lubricated: gold to tin/lead - not good, even with
lubrication.  I
> know some of the information on this subject is dated, but I don't believe
the passing of
> time has invalidated it.
>
> On products where we build the entire assembly, I can easily verify the
total connector
> configuration.  However, when we are building only a circuit board
assembly for a
> customer, I have no idea of materials used in the mating connectors.  To
further
> complicate the issue, I know that some connector manufacturers lubricate
the tin or
> tin/lead female connectors and some manufacturers do not, or at least
won't verify that
> they do.
>
> Is there an industrial specification/requirement for the lubrication of
connectors on
> circuit board assemblies that should be called out in the product
specification?
>
> At present we are using a contact lubricant on all tin or tin/lead plated
male connector
> contacts, except when the mating connector is known to be prelubricated.
The lubricant we
> are using must be allowed to cure out 24 hours prior to assembly.  This is
not real
> conducive to lowering cycle times.  Is anyone aware of a contact lubricate
the would
> improve on this?
>
> Thanks,
>
> Gary Camac
>
>

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################

ATOM RSS1 RSS2