Page 49 - ConnectorSupplier.com 2019 How-to-Specify E-Book
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MIL-DTL-38999 Series I connectors also offer removable, rear-release pin or socket contacts with crimp terminations that meet QPL SAE AS39029 requirements, thermocouple contacts, and PC-tail contacts for commercial use. The insert arrangements in these high-density connectors can accommodate up to 128 pins with contact sizes ranging from large (size 4) to small (size 26). EMI shielding capabilities and hermetic sealing options are available as well.
MIL-DTL-38999 Series II Connectors
MIL-DTL-38999 Series II connectors are circular, high-density, bayonet style connectors with low-profile shells in sizes ranging from #8 to 24 with more than 40 QPL-approved insert arrangements. Originally designed for use in civil and military aerospace applications, these high-reliability connectors feature EMI shielding and excellent resistance to shock and vibration and fluid ingress, and are now also used in marine electronics, communications equipment, medical instrumentation, weapons systems, armored carriers and tanks, and test equipment.
Air Electro stocks Glenair’s hermetic MIL-DTL-38999 Series I, II, III, and IV connectors.
These connectors also have aluminum alloy shells with conductive plating options that provide electrical continuity between the mated shells prior to contact engagement — including black zinc nickel, olive green cadmium, nickel, and hard anodized finishes — and polarization features that ensure proper orientation of the mating halves prior to electrical engagement. A variety of shell types are available in this series as well, and include front- and rear- mount square flange receptacles with or without accessory threads, in-line receptacles with accessory threads, jam nut receptacles with accessory threads, and plugs both with and without RFI shielding.
D38999 Series II connectors also offer removable, rear-release pin or socket contacts with crimp terminations (AS39029), as well as thermocouple contacts and, for commercial applications, PC-tail contacts. These high- density connectors accept insert arrangements that accommodate up to 128 pins in sizes ranging from large (size 12) to small (size 22D) and are also available with EMI shielding capabilities and hermetic seals.
MIL-DTL-38999 Series III Connectors
MIL-DTL-D38999 Series III connectors are the most prevalent military circular connectors on the market, and are also in accordance with Boeing specification BACC63 and Airbus specification EN3645. These circular, high- density, screw-coupling connectors are available in shell sizes ranging from #9 to 25 with more than 50 QPL- approved insert arrangements and deliver high-reliability performance in harsh-environment applications with operating temperatures up to 200°C and high vibration up to 44g for 500 mating and unmating cycles. They were originally designed for civil and military aerospace applications, but are now used for marine electronics, communications equipment, medical instrumentation, weapons systems, armored carriers and tanks, and test equipment as well.
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