The Basic Contact Probe F77305B230G300 (item number 1001577) is a spring-loaded probe for temporary electrical contact with test points. With tip style 05 (Concave stepped), F77305B230G300 combines ICT/FCT use with a geometry intended for pins and wire-wrap posts with a guided, smooth contacting action. F77305B230G300 combines a pitch of 3.5 mm / 138 mil with tip style 05 (Concave stepped) and a tip diameter of 2.3 mm. For F77305B230G300, spring force is 300 cN at a nominal travel of 4 mm. F77305B230G300 is rated for 10 A continuous current with a typical contact resistance of 25 mΩ. The plunger in F77305B230G300 is made of beryllium copper and is gold-plated.