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 | |
| Interface | Per MIL-DTL-38999 | |
| 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 |
38999 Format Connector Specifications and Testing Configuration
