250W Open Frame Medical PSU – MDS-250A Series

Delta’s MDS-250APB12 open frame design offers a high energy density (12 Watts/in3) 3” x 5” inch design, with height suitable for 1U applications for Type BF patient access medical products. With operating parameters of 90 to 264 Vac universal input voltage, temperatures of -10 to +70 degrees centigrade, and altitudes of up to 5000 meters (16,400 feet), the design is well suited for a variety of both medical and non-medical applications.

Other features include input surge of 300 Vac, low leakage current, no-load input power < 0.5 Watt, and 500K hour MTBF. This product is certified for EMC standards EN/BS EN 55011 for industrial, scientific and medical (ISM) radio-frequency equipment, and EN/BS EN55032 for Industrial Technology Equipment (ITE) radio-frequency equipment.

An enhanced feature set, includes a 5 Volt/0.5 amp standby output, remote on/off, remote sense, and a power good signal that are included as part of the standard product.

The design, which has protection against shock compliant with 2XMOPP and Type BF requirements, has both medical (with risk report available), and ITE safety approvals, including cURus (US & Canada) /TUV/GB (China); plus, CB certificates with all national deviations.


  • Safety Approvals to IEC 60601-1 & IEC 62368-1
  • Compliant with IEC 60601-1-2 4th Ed. Requirements
  • Up to 150-Watt Convection
  • Up to 500 K Hrs MTBF
  • Suited for Type BF Medical Products
  • 2 × MOPP isolation

Model Information

ModelO/P VoltageO/P CurrentPower


Delta Electronics

Delta Electronics Group is a multi-billion dollar global company and the world’s leading producer of power supplies for the top names in industrial, medical and consumer electronics devices. For more than 40 years, Delta Electronics has been a well regarded and trusted ODM (Original Design Manufacturer) partner by many top tier companies on the Fortune® 500 list. In 2008, Delta Electronics introduced its own brand of standard power supply units (PSU) which offer customers the same world class technology and quality that Delta’s ODM partners demand.

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MDS-250APB-12 Product Datasheet


MDS-250APB-24 Product Datasheet