MDM-21SCBRPL56-A174 is a 21-contact Micro-D PCB socket (receptacle) connector designed for high-density, high-reliability board-to-board, board-to-cable, and cable-to-cable applications. It features a condensed right angle (CBR) termination type with 0.100" x 0.100" through-hole staggered grid pattern, electroless nickel shell finish (A174), and Liquid Crystal Polymer (LCP) insulator material. Key dimensions include A Max of 1.085 inches (27.56 mm), B of 0.865 inches (21.97 mm), and C of 0.702 inches (17.83 mm). The connector is rated for dielectric withstanding voltage of 600 VAC at sea level, insulation resistance of 5,000 megohms minimum, and supports 500 mating cycles. This connector is ideal for use with flex circuitry, flat cable, and printed circuit boards in demanding environments requiring thermal shock resistance from -55°C to +125°C and vibration resistance up to 20 G's.