The Hirose DF33 series is a 3.3 mm pitch small power supply connector system. The connector is capable of handling 4 A to 5 A. The design features an open barrel that holds the contact in the housing, restricting its movement. The two-point spring support on the contact stabilizes the connection which prevents fretting corrosion and provides contact reliability. An optional retainer is available and helps prevent incomplete contact installation and also increases cable-pull force.