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Lubricant for a wierd problem

S

siliconmike

Jan 1, 1970
0
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

Mike
 
A

Alan Adrian

Jan 1, 1970
0
siliconmike said:
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

This can be done with math... but quantities such as *weak* and *light*
won't get you (or anyone else) there...

Al...
 
Y

Yukio YANO

Jan 1, 1970
0
siliconmike said:
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

Mike
POLYPHENYLETHER
example SANTOVAC 5
Found in some "Contact Kleaners" as "with PPE"
Extremely Low Vapour Pressure, very stable, inert, great lubricant,
expensive, "same price range as Gold !"
Also available as a "High performance Ulta high Vacuum Grease "Fomblin"

Yukio YANO
 
T

The Phantom

Jan 1, 1970
0
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

Mike

There is a product called "Gold Guard", whose active ingredient is polyphenylether, which
is just for this job.
http://rocky.digikey.com/scripts/ProductInfo.dll?Site=US&V=75&M=CP420E
 
S

siliconmike

Jan 1, 1970
0
Alan said:
This can be done with math... but quantities such as *weak* and *light*
won't get you (or anyone else) there...

Al...

You are wrong. Probably if you had a clue you would have replied /
guessed a solution like 7 other replies to my message which have been
of great help.
 
C

Chris Berry

Jan 1, 1970
0
That's one reason why I suggested it.
Not knowing anything about the application itself, it might be a solution.
cb
 
R

Ross Herbert

Jan 1, 1970
0
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

Mike

Stabilant 22 should do the trick http://www.stabilant.com/techt02h.htm
While not marketed as either a contact cleaner or lubricant, it does
do both. Expensive but good.
 
W

Watson A.Name - \Watt Sun, the Dark Remover\

Jan 1, 1970
0
siliconmike said:
I have a pcb with 10 electrical gold plated contacts in a single line
with 5 mil isolation between them.

At any time, a small gold plated copper part "C" makes a very *light*
contact with only one of the contacts.

A *weak* force is responsible to move C over the range of contacts.

Is there some lubricant I can apply on the contacts to reduce the
friction between C and the contacts?

Please don't advise to change this setup as nothing can be changed, for
certain reasons.

I have (or had, I should say) a flashlight that I converted over to
white LEDs. Well, to my surprise, when I shut off the swtch, the LEDs
continued to glow dimly. I came to the conclusion that the grease they
used on the slide switch contacts was somewhat conductive. This wasn't
noticeable on a ragular filament lamp, but the LEDs showed it easily.
So if you do use a lubricant, make sure it is a good insulator.
 
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