finishing.com -- The Home Page of the Finishing Industry
Serious Education & the most FUN
you can have in metal finishing smiley

No popups, spam, registration or passwords
HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
topic 12258

Advantages of tin plating vs. bare copper for bus bar


 

In a 48 volt DC application, is it necessary to tin plate copper bus (No. 110 / half hard Copper)? Are there any REAL advantages (i.e. better thermals, more reliable electrical connection, less voltage drop, etc.)? It should be noted that the normal operating environment is controlled.

Thanks,

Everett Salinas
Compaq Computer - Houston, Texas


 

Something should be done at the connections to insure good electrical conductivity because copper does oxidize and create high resistance joints. The options include silver plating, tin plating, or application of a joint compound such as "No-Ox-Id" from Sanchem. The joint compounds work fine, even in severe environments like plating shops, and at much lower voltages, but considering that you may not want a wet compound on the joints, tin plating may still be your best answer.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E.
finishing.com
Pine Beach, New Jersey


 

Tin corrodes far less than copper. The military uses silver on some of their equipment because it does not form whiskers and is reasonably corrosion resistant with superior transmission of electricity. It actually does not cost terribly more than tin, once a process is established and has a run on a regular basis.

James Watts
- Navarre, Florida



If you have a question in mind which seems off topic, please Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2018 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.