The PWR-21-11 and PWR-22-11 boards are rugged MIL-STD-1275/704 compliant DC/DC converter cards in stackable embedded PC/104-Plus (PWR-21-11) and PCI/104-Express (PWR-22-11) form factors designed for demanding power conditions experienced by embedded computing devices used onboard military ground vehicles (MIL-STD-1275D) and aircraft (MIL-STD-704F) installations. These galvanically isolated supplies provide 100 watts of combined power output (+3.3V, +5V, +12V) and come equipped with MIL-STD-461 EMI filtering and transient protections specifically designed for demanding 250V spike and 100V surge requirements under MIL-STD-1275. These boards provide power over stackable buses (PCI and ISA buses for PWR-21-11, PCI and PCI-Express buses for PWR-22-11) as well as auxiliary power output connectors for non-PC/104 systems. They support an 18-36V DC input range for 24/28VDC applications, and typically eliminate the need for additional in-line power conditioning/EMI filtering devices in military embedded systems.

  • 100 / 50 Watt MIL PC104+ / PCI/104-Express DC/DC Power Supply
  • Designed to Meet MIL-STD-810G, MIL-STD-1275D, MIL-STD-704F, and MIL-STD-461F
  • Voltage Input: Nominal 28.0 V DC (+18 VDC to +36VDC with support for 250V spike and 100V surge per MIL-STD-1275)
  • Voltage Output: +5V @ 10A (50W Max), +3.3V @ 15A (50W Max), +12 V @ 1.5A (18W Max – 12V derived from 3.3V rail)
  • Isolation: 1500V Galvanic Isolation DC
  • Power Input Protection: Reverse Polarity, Voltage Transient, Surge, Spike, Over Current
  • Power Output Protection: Short Circuit Protection, Overcurrent Protection, Overvoltage Protection
  • EMI/EMC: Designed for Compliance with MIL-STD-461F (CE102, CS101)
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)
  • Reliability: No Moving Parts. No Active Cooling Required.
  • 24 / 28V DC-DC Conversion for PC/104, PC/104-Plus, PCI-104, PCIe104, PCI/104-Express and Other Small Form Factor Embedded Systems

Curtiss-Wright Defense Solutions is an industry-leading supplier of sophisticated electronics products recognized around the world as one of the most innovative designers and manufacturers of highly engineered systems built to perform reliably in harsh conditions. We continue to lead the way in developing and marketing advanced solutions that address the rapidly evolving requirements of naval, aerospace and ground defense customers. Curtiss-Wright proudly maintains its long, historic tradition of innovation. Learn more at

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