38999 Circular DC Connectors
These DC connectors can be produced for both laser-weld and solder-in applications. Our hermetically-sealed 38999 mateable circular connectors are fully compliant with the interface requirements of MIL-DTL-38999.
The Hermetic Solution Group also offers 38999 connectors* with integrated EMI filters. These filtered connectors are custom configured to meet a wide range of EMI filter performance parameters. Connectors with C- and L-section filters can support 5-15 amps, working voltage of 50- 400 VDC with a minimum insertion loss of between 2 and 70dB, depending on configuration. Connectors using Pi-section filters support 10 amps and a working voltage of 50-300 VDC with a minimum insertion loss of between 2 and 70dB, depending on configuration.
*The Hermetic Solution Group’s 38999 mateable connectors are not QPL (Qualified Parts List).
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38999 Format Connector Specifications and Testing Configuration
|Performance Configurations||38999 Format Connectors|
|Specifications||Material Compatibility||Designed for Aluminum, Titanium or Iron/Nickel Alloy applications|
|Contact Material||Beryllium Copper CDA Alloy 172/173|
|Shell Finish Options||Passivated, Nickel/Gold Plated or Chromate Conversion Coated as applicable|
|Contact Finish||Nickel/Gold Plating|
|Number of Contacts||Per MIL-DTL-38999|
|Optional Solder Cups||Accepts 24 to 30 AWG solid/stranded wire|
|Performance||Leak Rate||Less than 1×10-9 cc/sec Helium at 1 atmospheric differential pressure|
|Thermal Cycling||Tested to 500 (minimum) thermal cycles without hermetic performance loss|
|Insulation Resistance||Connectors provide greater than 5,000 Megohms at 500 VDC when tested in IAW MIL-STD-1344, Method 3003|
|Dielectric Withstanding Voltsage||Connectors exhibit no evidence of breakdown or flashover when tested in IAW MIL-STD-1344, Method 3003|
|Corrosion Resistance||Connectors meet salt spray test in IAW MIL-STD-1344, Method 3003|
|Operating Temperature||-65°C to 200°C|