SynQor Hi Rel and Mil COTS PCB DC-DC Converter Product Image

Hi Rel and Mil COTS PCB DC-DC Converters

High reliability and Mil COTS converters for applications in avionics and land terrestrial military high end products.

Supplier: SynQor®

Technology type: PCB DC/DC Power Supplies

The MilQor® series of high-reliability DC-DC converters bring SynQor’s field-proven high-efficiency synchronous rectifier technology to the military/avionics industry. SynQor’s innovative QorSeal® packaging approach ensures survivability in the most hostile environments. Compatible with the industry-standard format, these converters operate at a fixed frequency, have no opto-isolators, and follow conservative component derating guidelines.

Hi-Rel series converters (with Hi-Rel filter) are designed to meet: MIL-HDBK-704 RTCA/DO-160 Section 16, 17, 18 MIL-STD-1275 (B, D)DEF-STAN 61-5 (Part 6)/(5, 6)MIL-STD-461 (C, D, E, F) RTCA/DO-160 (E, F, G) Section 22.

Range features

A high level overview of what this range offers

  • Fixed switching frequency
  • No opto-isolators
  • Parallel operation with a current share on MQFL
  • Remote sense
  • Clock synchronisation
  • Primary referenced enable
  • Secondary referenced enable on MQFL
  • Continuous short circuit and overload protection with auto-restart feature
  • Input under-voltage and over-voltage shutdown
  • Output voltage trim range: (MQHL, MQHR & MQBL) +10% to -10%
  • AS9100 and ISO 9001 certified facility
  • Full component traceability
  • Temperature cycling
  • Constant acceleration screening
  • 24, 96, 160-hour burn-in
  • Three-level temperature screening
  • MIL-STD-810 consistent with RTCA/DO-160
  • SynQor’s first article qualification - consistent with MIL-STD-883
  • SynQor’s element evaluation for HB and ES grade

What's in this range?

All the variants in the range and a comparison of what they offer


Input voltage (continuous)

Input voltage (transient)

Output current rating


230V - 400V

155V - 450V



18V - 40V

16V - 50V


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