MIL-DTL-38999 III (D38999) harsh environment connectors consist of wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. They are offered in 9 shell sizes and 54 insert arrangements, utilizing M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax. 38999 Series 3 connectors are offered in a variety of shell materials, including aluminum, stainless steel, and lightweight composite. They are also available in a wide assortment of plating options, including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel. Selection includes RoHS-compliant, cadmium-free finishes, as well as Boeing BACC-approved designs.
Part Aliases: TE Connectivity | Deutsch YACT24JJ35ACV00100
The MIL-DTL-38999 III (D38999) harsh environment connectors, also known as the DEUTSCH 38999 Series III Composite Connectors, are rugged and reliable circular receptacles designed for military and aerospace applications. This specific model, with the part number D38999/24JJ35AC, features a jam nut mounting style and offers 128 contacts in a size 22D arrangement. With a low operating temperature of -65 °C and a high maximum operating temperature of 175 °C, these connectors are suitable for extreme environmental conditions. Constructed with a composite shell material and cadmium olive drab plating, they provide excellent conductivity and protection against corrosion. Approved for Boeing BACC use, these connectors are ideal for high-reliability systems in demanding environments.