ANTS!!!!

From: Dwight K. Elvey <dwight.elvey_at_amd.com>
Date: Mon Nov 17 15:38:16 2003

>From: "Patrick Rigney" <patrick_at_evocative.com>
>
>> -----Original Message-----
>> From: cctalk-bounces_at_classiccmp.org
>> [mailto:cctalk-bounces_at_classiccmp.org]On Behalf Of Dwight K. Elvey
>> Sent: Monday, November 17, 2003 11:58 AM
>> To: cctalk_at_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
>
>

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
Received on Mon Nov 17 2003 - 15:38:16 GMT