Harwin M20 Series 2.54mm PCB SMT Socket Connectors M20 series 2.54mm pitch SMT mount wire to board socket connectors with an industry standard space saving compact design. These M20 series 2.54mm SMT sockets have a dual entry design and can be used for both top and bottom entry. The contacts used in these M20 SMT sockets are made from phosphor bronze with a dual beam design that offers high durability along with improved repeatable retention and electrical connection resulting in a more reliable connector. These M20 SMT connectors offer a versatile solution for a variety of applications including consumer electronics, communications, drives and controls, industrial monitoring and personal computing.