Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Backside of wafers are dielectric but still become Electroless Nickel plated





December 16, 2011

Q. My wafers are getting backside plating which are not supposed to, I am doing electroless Nickel plating. Backside of the wafer is dielectric. Any insight on this issue will be greatly helpful. What are the reasons behind plating the backside of the wafer?

Satish Yeldandi
- Boise, Idaho, United States



First of two simultaneous responses -- December 21, 2011

EN will plate anything that is properly activated and plateable. You have to find a way to mask off the back side that is compatible with the plating process. Unfortunately, some masks are nearly impossible to get off COMPLETELY without numerous clean solvent dips.

Find someone in the industry that can point you in the right direction. I would start with tech services of the OEM if your EN vendor cannot help you. They want your business, so most, at least the good ones, will do a lot to help you.

James Watts
- Navarre, Florida



Second of two simultaneous responses -- December 21, 2011

Electroless indeed means the surface doesn't need to be conductive, only receptive or "active". It is not infrequent to see nickel deposits on plastic tank walls or glass beakers. You may need to mask those surfaces before processing,
G. Marrufo

Guillermo Marrufo
- Monterrey, 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 -or- Start a 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    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA