Trapezoidal type PION pin with improved contact yield and test socket having the same

摘要

According to the present invention, provided is a PION pin comprising: a pad connection pin configured to be in contact with a contact pad; a ball connection pin configured to be in contact with a conductive ball; an elastic spring installed between the pad connection pin and the ball connection pin; and a multiple-contact spot auxiliary pin configured to be combined with the ball connection pin and to be in contact with the conductive ball and to form multiple contact spots. According to the configuration of the present invention, contact yield increase can be expected through a contact in a surface to surface multiple contact spots with a spherical conductive ball.