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ERM75 Low Input Range Series


75 W DC-DC Converters (Low Input Models)

The ERM75 series high performance 75 W isolated DC-DC converter modules are designed specifically for railway applications. The low input versions feature a 43 to 101 VDC input that complies with the European EN50155 standard for electronic equipment used on railway rolling stock. There is a choice of four single output models, offering voltages of 5 V, 12 V, 15 V or 24 V.

Fully encapsulated in a metal case with an isolated baseplate, the converters have an industry-standard 2.28 x 1.45 inch (57.9 x 36.8mm) quarter-brick footprint and a height of just 0.5 inch (12.7 mm). Reinforced insulation rated at 3000 VAC RMS and high EMI immunity qualifies these converters for many demanding applications in railway and other transportation systems.

Advanced circuit topology provides up to 92% efficiency and allows the converters to accommodate ambient operating temperatures as high as 80˚C with suitable derating. An optional heatsink is available. Further features include differential remote sense, remote On/Off and undervoltage shutdown, as well as overload and short-circuit protection.


  • Small 57.9 x 36.8 x12.7 mm package
  • Input Range 43 - 101 VDC
  • High Efficiency up to 92%
  • Operating Temp. Range -40 °C to +80 °C
  • Reinforced Insulation 3000 VAC RMS
  • Vibration and Thermal Shock to EN61373
  • Safety meets EN60950-1 and Railway Standard EN50155


  • No Minimum Load Requirement
  • Under-Voltage Shutdown
  • Remote On/Off
  • Metal Case with Isolated Baseplate


Output Power (W): 75
Length (Inches): 2.28
Width (Inches): 1.45
Height (Inches): 0.5
Mounting Type: BMP; Through Hole
Minimum Output Current (A): 0
Maximum Output Current (A): 15
Output Voltage Range (V): 0V to 5V
All Specifications Collapse Specifications

Stock Check

Model Number
Min. Voltage (V) Max. Voltage (V) Current (A) Nominal Voltage (V) Number of Outputs Samples Buy
ERM03H72 Active, In Stock 21.6 26.4 3.125 24 1 Request Buy
ERM05C72 Active, In Stock 13.5 16.5 5 15 1 Request Buy
ERM06B72 Active, In Stock 0 0 0 0 1 Request Buy
ERM15A72 Active, In Stock 0 5 15 0 1 Request Buy

Technical Documentation

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