10-497446-075 Amphenol

38999 - LJT MIL-DTL-38999 SERIES I Amphenol LJT MIL-DTL-38999 Series I 100% SCOOP-PROOF DESIGN WITH QUICK, POSITIVE BAYONET COUPLING Amphenols MIL-DTL-38999 series I LJT miniature connectors offer high-density contact arrangements and are suitable for extremely high-reliability connections, including use in military and commercial aviation. They are environmentally-sealed and have a wide operating temperature range. Meets requirements of HE308 Intermateable with ITT Cannon, Deutsch, Souriau, Matrix and all MIL-DTL-38999 series I connectors Formerly MIL-C-38999 APPLICATIONS High-performance military aircraft Missiles Commercial airlines Shipboard Communications equipment Medical instrumentation Armored personnel carriers & tanks High-reliability test equipment FEATURES QUICK-MATING A three-point bayonet coupling system makes the LJTs quick-mating and provides an audible and tactile click, along with visual verification of mated connectors via a sighting hole and high-visibility, bright blue bayonet pins. SHIELDED INTERCONNECT LJT plugs feature high-quality grounding springs that provide 360-degrees of EMI/RFI shielding protection. These springs ground the barrel of the LJT plugs to the inside wall of the LJT receptacles with a wiping action that offers effective protection from reception or transmission of electronic noise. MANY CONTACT LAYOUTS AND STYLES LJT connectors come in a wide variety of contact sizes and layouts, up to 128 contacts. Printed circuit board, fibre optic, thermocouple, and coax-style contacts are available for special applications. UTILIZES HIGH-QUALITY MILITARY CONTACTS For standard applications, LJTs come with crimp-style military contacts design to resist bending and provide reliable performance under the most rigorous conditions. CORROSION-RESISTANT LJTs are available with cadmium over nickel plating that has met and passed the 500-hour military salt spray corrosion tests. For assistance in Europe, please see the back cover for a complete listing of our branch offices and contact numbers. 171 Specifications subject to change. 38999 - LJT MIL-DTL-38999 SERIES I TECHNICAL SPECIFICATIONS MATERIALS AND FINISHES Shell Aluminum alloy Bayonet Pins Passivated stainless steel per QQ-S-763 Plating A - Clear chromate over cadmium over electroless nickel per QQ-P-416 B - Olive drab chromate over cadmium over electroless nickel per QQ-P-416 F - Electroless nickel per QQ-N-290 C - Hard, anodic, non-conductive in accordance with MIL-A-862 W52 - Olive drab zinc cobalt Contacts Copper alloy Plating Gold-plated, 50 microinches per MIL-G-45204 type II, grade C, class I Insulator Hard dielectric wafer which contains metal retention tines for high-reliability retention of crimp contacts Grommet & Seals Silicone-based elastomer Grounding Springs Beryllium copper ELECTRICAL DATA SERVICE RATING Operating Voltage & Test Voltage (Unmated Condition) TEST VOLTAGES N M I II Sea Level 1000 1300 1800 2300 100,000 Feet 200 200 200 200 Current Rating by Contact Size & Wire Accommodation (Test Amps) WIRE SIZE 22D 22M 22 20 16 12 8 28 1.5 1.5 - - - - - 26 2.0 2.0 2.0 - - - - 24 3.0 3.0 3.0 3.0 - - - 22 5.0 - 5.0 5.0 - - - 20 - - - 7.5 7.5 - - 18 - - - - 10.0 - - 16 - - - - 13.0 - - 14 - - - - - 17.0 - 12 - - - - - 23.0 - 8 (Power) - - - - - - 46 Contact resistance of Mated Contacts End-to-End CONTACT SIZE MAX. MILLIVOLT DROP 22D 73 22M 45 22 73 20 55 16 49 12 42 Insulation Resistance 5,000 megohms minimum 8 (Power) 26 MECHANICAL Operating A - Plating -65C to 150C (-85F to 302F) Temperature B - Plating -65C to 175C (-85F to 347F) F - Plating -65C to 200C (-85F to 392F) C - Anodic (non-conductive) -65C to 200C (-85F to 392F) W52 - Plating -65C to 150C (-85F to 302F) Sealing Against sand, dust per MIL-STD-202 & ice resistance Wire Sealing Range CONTACT SIZE MINIMUM IN MAXIMUM IN MINIMUM MM MAXIMUM MM 22D 0.030 0.054 0.76 1.37 22M 0.030 0.050 0.76 1.27 22 0.034 0.060 0.86 1.52 20 0.040 0.083 1.02 2.11 16 0.065 0.109 1.65 2.77 12 0.097 0.142 2.46 3.61 10 0.135 0.162 3.42 4.12 8 (Power) 0.135 0.155 3.43 3.94 8 (Coax) 0.135 0.155 3.43 3.94 8 (Twinax) 0.124 0.134 3.15 3.40 For assistance in North America: +1 800.642.8750 for Pricing/Delivery or +1 800.523.0727 Tech Support www.peigenesis.com sales peigenesis.com 172