103239-2 is a single row unshrouded breakaway header designed for wire-to-board connections in computer and personal systems applications. This connector features 2 positions with 0.100 inch (2.54 mm) centers and 0.025 inch (0.64 mm) square posts, with dimensions C=0.120 inch (3.05 mm) and D=0.230 inch (5.84 mm). The header posts are made of phosphor bronze with plating code A, featuring duplex plating with 0.000030 inch (0.00076 mm) minimum gold on the contact area and tin-lead on the solder area, with nickel underplating. The housing is constructed from thermoplastic material rated 94V-0. These breakaway headers are end-to-end stackable and are commonly used in computer industry applications requiring reliable wire-to-board interconnections.