1-103186-0 is an AMPMODU unshrouded double-row breakaway header designed for board-to-board interconnection applications. This header features 20 positions with a 0.100 x 0.100 inch (2.54 x 2.54 mm) centerline spacing and Plating B post plating option. The header has dimensions of A = 0.984 inch (24.99 mm) and B = 0.900 inch (22.86 mm), with C = 0.120 inch (3.05 mm), D = 0.230 inch (5.84 mm), and E = 0.185 inch (4.70 mm). The breakaway design allows headers to be broken to the desired number of positions using Tool Kit No. 314818-1. These headers are commonly used in electronic interconnection systems where reliable and flexible pin header configurations are required.