Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

Problem? Solution? Chime right in!
-- this is a no-registration site.

-----

"Need a thin insulative coating for micro stainless steel housing"



2005

Q. My company builds a silicon chip device that is inserted into a very small metal tube housing. The OD is 0.015" and the ID is only 0.012". The problem I face is that the silicon circuit is leaking current into the housing. Since this is a implanted medical device, this is not acceptable.

I need to find a coating that will prevent this current flow. It should insulate both the inside and outside of the housing. The magnitude of the current is in the order of 2 milliamps.

Because my clearance from IC to housing is only 0.001" the coating must be very thin.

Peter Plouf
medical devices - London ,Ontario, Canada
^


simultaneous 2005

A. A PVD coating might work. It depends on the aspect ratio of the hole. PVD coatings can go down holes, but not very far, maybe twice the diameter or so.

jim treglio portrait
Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover - San Diego, California
^


2005

A. Your gap is really very small. If there is such a coating it will probably be a lacquer or enamel. Problem is to assure it remains impervious and dielectric after insertion due to possible damage.
G. Marrufo-Mexico

Guillermo Marrufo
Monterrey, NL, Mexico
^

none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA