The MINMAX MRZI150 series is a generation of high performance 150W DC-DC converters in a quarter brick package, designed specifically for railway applications with popular 36-160 VDC input ranges. MRZI150 is approved by railway industry standard EN 50155 and complies with EMC standard EN 50121-3-2. Advanced circuit topology provides a very high efficiency of up to 90%, which allows baseplate temperatures of up to 105℃ and very high I/O isolation up to 2000VAC. It also has reinforced insulation, which is designed to meet stringent requirements and harsh environments. Further product features include under-voltage, overload/voltage/temperature, short circuit protection, remote On/Off control (positive/negative logic), output voltage trim, and output sense. It also complies specifically fire protection test EN45545-2 to ensure safety during railway/railroad vehicle operation.


  • Industrial standard quarter brick package
  • Ultra-wide input range 36-160VDC
  • I/O isolation 2000VAC with reinforced insulation
  • Excellent efficiency of up to 90%
  • Operating baseplate temperature range of -40℃ to +105℃
  • No minimum load requirement
  • Under-voltage, overload/voltage, and short circuit protection
  • Remote on/off, output voltage trim, output sense
  • Vibration and shock/bump test EN 61373 approved
  • Cooling, dry and damp heat test IEC/EN 60068-2-1, 2, 30 approved
  • Railway EMC Standard EN 50121-3-2 approved
  • Railway Certified EN 50155 (IEC60571) approved
  • Fire Protection Test EN 45545-2 approved
  • UL/cUL/IEC/EN 62368-1 Safety approval and CE marking