As a Basic Contact Probe, F05121S050L150 (item number 1000493) establishes a spring-loaded electrical connection to the test point. With tip style 21 (4-point crown (self-cleaning)), F05121S050L150 combines ICT/FCT use with a geometry intended for pad surfaces and soldered pins where the crown geometry can penetrate residues or oxide layers. F05121S050L150 combines a pitch of 1.27 mm / 50 mil with tip style 21 (4-point crown (self-cleaning)) and a tip diameter of 0.5 mm. For F05121S050L150, spring force is 150 cN at a nominal travel of 8 mm. The electrical rating of F05121S050L150 combines 3 A continuous current with 40 mΩ typical contact resistance. The plunger in F05121S050L150 is made of steel and uses Longtime Gold plating.