Contact probe pin
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United States of America Patent
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Apr 18, 2017
Grant Date -
Aug 29, 2013
app pub date -
Nov 16, 2011
filing date -
Nov 19, 2010
priority date (Note) -
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Abstract
The present invention provides a contact probe pin in which a carbon film having both of conductivity and durability is formed on a base material with a tip divided, wherein Sn adherence can be reduced as much as possible to be able to maintain stable electrical contact over a long period of time, even under such circumstances that the temperature of a usage environment becomes high. The present invention relates to a contact probe pin, including a tip divided into 2 or more projections and repeatedly coming into contact with a test surface at the projection, wherein a carbon film containing a metal element is formed at least on a surface of the projection, and a radius of curvature at an apex part of the projection is 30 μm or more.
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