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Product Announcement from North Hills Signal Processing Corporation



North Hills provides In-line data bus couplers with up to five transformercoupled stub output ports (units with more than five stubs are available on special order). These units are available with and without internal terminations and are for use in applications where mounting can be accomplished by wiring the coupler into the harness. These units can be supplied with a variety of different connectors and cables (MIL-C-17/176-00002 is standard) or without connectors for splicing or integrating into harnesses. The standard stocked units are manufactured with 12 inch long (30cm or 300mm) MIL-C-17/176-00002 cable. Couplers can also beordered with custom cable lengths and a variety of connectors for direct installation on any system. Using in-line couplers in your data network reduces the number of connectors which significantly improves the calculated reliability (MTBF).

All resistors are 1 Watt per MIL-R-39007, Failure Grade S and mounted away from the transformer to minimize heating effects. The transformers are manufactured to MIL-T-21038. These couplers are Flight Qualified and have successfully completed a 1000 hour life test at +125°C and 100% duty cycle. Copies of test reports are available upon request. Space Qualified couplers are also available. Please refer to the appropriate data sheet for more information.

All products are 100 % tested and certified. For maximum system reliability multiple couplers can be daisy chained at the factory into an integrated harness with no splices. Specification Control Drawings are available to help you document the part selected for your application.


  • 1 Watt resistors
  • -55ºC to +125ºC operating temperature
  • Single or Multi-Stub



  • Flight qualified
  • Small and lightweight
  • 100% Tested
  • Can be supplied as a complete harness according to customer specification
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