Amphenol 91-569789-37H MIL-DTL-38999 Series III Circular Connector

Amphenol 91-569789-37H is a MIL-DTL-38999 Series III circular connector delivering a 37-pin interconnect in a compact, rugged envelope designed for demanding environments such as aerospace, defense, and other high-vibration applications. This variant employs solder cup contacts and is configured for jam-nut mounting on a single port, providing a robust, soldered termination that resists loosening under shock, vibration, and repeated mating cycles while maintaining reliable electrical performance. With 37 contact positions, the 91-569789-37H balances high-density wiring with MIL-SPEC compatibility, making it suitable for signal and power interconnects in avionics panels, test equipment, rugged control systems, and other critical assemblies where space or weight is at a premium. As part of Amphenol’s Series III offering, this connector is designed to tolerate demanding environmental conditions and provide consistent, long-term performance in demanding military, aerospace, and industrial platforms.