Silver is an excellent contact material used in many parts, but as it is silver it can tarnish and that can be a cause for concern on its functionality. In this post, I will clarify how light tarnish will not affect the performance of the contact.
As the attached datasheet further explains, there can be different types of tarnish that can build on the silver. Luckily silver contacts can still function fine with some tarnish on them. If the level of tarnish is somewhat excessive, then a more active flux may be required, but the contact should still function.
The silver-plated contact surface can appear discolored and still function very well if used correctly in the application.
Tarnished Surface.pdf (646.2 KB)