MSP-100 Series - Release Notes

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The 100 watt MSP-100 series of AC/DC medical, enclosed type, power supplies features reasonably high efficiency, low leakage current (≦300μA), extremely low "no-load" power consumption of less than 0.5W, an active PFC function, low profile (38mm) 1U form factor and a 5 year warranty.

The MSP-100 series complies with international medical safety regulations (MOOP level) and are EMI, Class B Level, compliant. These supplies meet the rigorous demands required for many medical and diagnostic device applications. MSP series power supplies are for ‘non-patient contact’ medical applications. (See the MED RPS Series for "patient contact" approved supplies.)

With state-of-the-art high frequency switching technology, MSP-100 is up to 90% efficient and is cooled by natural (free air) convection. It can operate under full load conditions, in ambient temperatures up to +40ºC (104ºF) and even up to +60ºC (140ºF) with some derating. (See data sheets for derating curves.)

Standard functions include remote sensing; protection against short circuit, overload (constant current mode), over voltage, and over temperature and: the MSP-100 series is equipped with a function allowing immunity for a 5 second 300VAC input surge. Naturally, this reduces the risk of damage caused by an unstable AC main.

MSP-100 is also equipped with a built-in remote ON/OFF control for the many medical equipment makers that require “no-load power consumption of less than 0.5W” so the final product will qualify as having a “green mode.”

MSP-100 series power supplies are certified compliant with global medical power supply requirements per UL/ CUL/ CB/ CE. Meeting these standards ensure users’ safety while avoiding harm to the environment.


The MSP-100 series is also available in a variety of other output voltages that include 3.3 Volt, 7.5 Volt, and 36 Volt versions. Contact us for price, availability and lead-time for these.

Suitable applications include medical and diagnostic equipment requiring low leakage current such as lab and analysis equipment, monitoring equipment, MRI & X-ray Machines, CT Scanners, chemical or biological detection equipment, as well as any system requiring low leakage current and/or low, no-load, power consumption.

MSP-100 Series Features at a Glance:

  • Comply with international medical safety regulations (MOOP level) and EMI Class B level.
  • Global certificates of compliance meeting UL/ CUL/ CB/ CE medical safety requirements
  • 1U low profile: 38mm
  • Low leakage current, less than 300μA
  • No load power consumption, less than 0.5W
  • Universal AC input 85~264V
  • Built-in active PFC function, PF>0.95
  • Withstands 300VAC surge for 5 seconds
  • High efficiency (up to 90%)
  • Protection: Short circuit / Overload / Over voltage / Over temperature (option on 100 series)
  • Built-in constant current limiting circuit
  • Built-in remote sense function
  • DC OK signal
  • Output voltage is adjustable ±10% by simple rheostat at the end of the terminal strip
  • 105ºC long-life electrolytic capacitors
  • Long life DC fan with ON/OFF control
  • Built-in remote ON/OFF control & 5V/0.3A standby output
  • Dimensions (LxWxH): 159 x 97 x 38mm (6.25 x 3.8 x 1.49 inches)
  • RoHS Compliant
  • 5 year warranty
Comply with ROHS (Restriction of Hazardous Substances) and 2006/122/EC - PFOS (PerFluoroOctane Sulfonates)