M83513/03-E03N is a microminiature rectangular connector designed to meet MIL-DTL-83513 military specification requirements for high-reliability interconnect applications. This connector features a metal aluminum shell with 0.050" contact spacing, gold plated copper alloy contacts, and a polarized D configuration for proper mating alignment. It offers a current rating of 3A maximum and contact resistance of 8 milliohms maximum, with available contact arrangements including 9, 15, 21, 25, 31, 37, 51, and 100 positions. The connector is commonly used in aerospace and defense, communications equipment, satellites, and medical applications where high-density, lightweight, and ruggedized performance is required in harsh environments.