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MORNSUN Increases Range of Rail R3 DC/DC Converters up to 40W

MORNSUN has released the new rail R3 DC/DC converters URF1D_LD-40WR3 to extend the range of MORNSUN 6W-20W R3 DC/DC converters.

This new series URF1D_LD-40WR3 provides a wide input voltage range of 40-160VDC required by input voltages of 72V, 96V, 110V in railway industry. Outputs and isolation voltage up to 3000VDC/1500VAC ensure them to meet the railway locomotive EN50155 standard requirements and EN62368 standard requirements.

The converters also offer a wide operating temperature range of -40℃ to 85℃. Protections for input UVP, OSC, OCP, OVP and OTP are also included.

Housed in a 2in by 1in DIP package, this URF1D_LD-40WR3 series is available for packages with optional heat sink in PCB mount, chassis mount and DIN rail mount, which offers flexibility to the designer of the end-product and makes this series ideal for applications in railway monitoring, lighting equipment, information display and other railway vehicle-related equipment.

Features include:

  • Ultra-wide input voltage range: 40VDC-160VDC
  • Enhanced isolation, isolation voltage: 3,000VDC / 1,500VAC
  • Operating temperature range: -40℃ to 85℃
  • Input Under-voltage protection, output short circuit, over-current, over–voltage protection, over-temperature protection
  • International standard pin-out
  • Reverse voltage protection available with A2S (Chassis mounting) or A4S (35mm DIN-Rail mounting)
  • Meets requirements of railway standard EN50155


Part Number Power(W) Input Voltage Range(VDC) Output Voltage(VDC) No. of outputs Isolation(VDC) Package Dimension (mm) Certification Sample
URF1D03LD-40WR3 40 40~160 3.3 1 3,000 DIP 50.80×25.40×11.80
URF1D05LD-40WR3 40 40~160 5 1 3,000 DIP 50.80×25.40×11.80
URF1D12LD-40WR3 40 40~160 12 1 3,000 DIP 50.80×25.40×11.80
URF1D15LD-40WR3 40 40~160 15 1 3,000 DIP 50.80×25.40×11.80
URF1D24LD-40WR3 40 40~160 24 1 3,000 DIP 50.80×25.40×11.80
URF1D48LD-40WR3 40 40~160 48 1 3,000 DIP 50.80×25.40×11.80

China has the world's largest high-speed rail network as long as 20,000km so far, which not only comprehensively enhances the quality of China's road network...
This application note demonstrates the different requirements that are in use for battery-powered railway applications and introduces MORNSUN’s rugged railway DC/DC converters and application notes.
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