PC/104-Plus 100W/50W Isolated DC/DC MIL-STD-1275/704 Power Supply

The PWR-21-11 board is a rugged MIL-STD-1275/704 compliant DC/DC converter card in stackable embedded PC/104-Plus form factor designed for demanding power conditions experienced by embedded computing devices used onboard military ground vehicles (MIL-STD-1275D) and aircraft (MIL-STD-704F) installations.


• 100 Watt PC104+ Power Supply
• MIL-STD-704F & MIL-STD-1275D Compliance
• MIL-STD-461F EMI Filter / Power Conditioning
• 18V to 36VDC Input Range
• +3V, +5V, +12V DC Output
• Extended Temperature: -40 to +85C
• MIL-STD-810G Shock/Vibe/Thermal


• 24/28V DC-DC Conversion for PC/104, PC/104-Plus, PCI-104 and Other Small Form Factor Embedded Systems
• Compliance with MIL-STD-1275, MIL-STD-704, MIL-STD-461 Surges, Spikes, Conducted Emissions in Aerospace / Avionics / Military / Ground Vehicles
This galvanically isolated supply provides 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. This board provides power over stackable buses as PCI and ISA buses 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.

Featuring a rugged mechanical design, this small form factor (3.550” x 3.775”) card is designed to be used as the bottom module in a PC/104, PC/104-Plus,or PCI-104, embedded system stack, operates without any active cooling over extended temperature ranges (-40 to +85C per MIL-STD-810G), and provides resistance to high levels of shock and vibration (per MIL-STD-810G fixed wing jet, rotary aircraft, and tracked ground vehicle conditions). It is passively cooled by attaching the bottom of the card to a thermally conductive base or enclosure wall with electrically-isolated gap pad to dissipate heat. A tribute to its robustness and versatility, the PWR-21-11 power supply is integrated into various MIL-STD-810/1275/704/461 qualified Eurotech DuraCOR mission computers, DuraNET Ethernet switches, and DuraMAR mobile IP router subsystems. This small form factor supply is compatible with Cisco Systems’ PCI-104 5915 Series Embedded Services Router (ESR) card as well as a host of embedded Single Board Computers modules on the market.
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