CONTACT PROBE EQUIPED WITH TUNGSTEN NEEDLE AND PROBE DEVICE

摘要

PROBLEM TO BE SOLVED: To make adjustable a characteristic impedance with use of a tungsten needle, and reduce external noises and signal losses at high frequencies. SOLUTION: Base parts 6b... of a plurality of tungsten needles 6... are soldered to electrodes of a printed board. Middle parts are fixed to a holding part 16 and leading end parts 6a are curved. A double-layer film 20 is applied via an adhesive from each of the base parts 6b... of the tungsten needles 6... to the holding part 16, thereby constituting a contact probe 14. The double-layer film 20 is comprised of an insulating resin film 22 and a grounded metallic film 24 of a good conductivity. The contact probe 14 constitutes a microstrip line.