17 Nov
2003
17 Nov
'03
7:38 a.m.
From: "Patrick Rigney"
<patrick(a)evocative.com>
Hi
Silicon oil is not conductive. In fact, silicon grease is used
to keep moisture out of high power ( high voltage ) RF connectors
in many applications. It does have a higher dialectic constant than
air but then most things do.
The reason it works well for sockets and connectors is that it has
almost zero film strength ( unlike petroleum based oils ). It keep
air from degrading the contact surface as well as keeping moisture
out.
Dwight
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
[mailto:cctalk-bounces@classiccmp.org]On Behalf Of Dwight K. Elvey
Sent: Monday, November 17, 2003 11:58 AM
To: cctalk(a)classiccmp.org
Subject: Re: ANTS!!!!
Hi
Many contact cleaners contain silicon oils. Contrary
to popular opinion, these oils actually improve contact in
sockets and edge connectors. Petroleum oils do just
the opposite.
I have used silicon based greases to improve the contact
of high current connectors when other methods have failed.
( DON'T use heat sink grease )
Dwight
Dwight,
If an amount of this oil were to become trapped in a layer under a soldered
chip or socket, is it sufficiently conductive to cause signal crosstalk?
Patrick