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Mon, 29 Apr 1996 18:01:05 +0100 |
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| From [log in to unmask] Wed May 1 14: |
28:36 1996 |
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We have a header in a prototype system with brass sprung contacts with gold
plate over nickel, contacting pins which are also gold-plate over nickel.
This connector carries 3A, and is showing a strong tendency to increase in
contact resistance in field tests (up to 150 mOhm). Removing and refitting
the connector takes the contact resistance back to "as new" (<40 m Ohm).. The
connectors have been examined by a test lab and pronounced OK, with no
contamination. No deposit or oxidation is visible on the surface.
Has anyone seen similar failure mechanism? What's the physics?
Terry Davey -------------------------------- [log in to unmask] ------
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