Isolated 50 W Quarter-Brick DC/DC Converter – 0RQB-50Y Series

Isolated 50 W Quarter-Brick DC/DC Converter – 0RQB-50Y Series


Bel Power Solutions’ DC/DC converters are offered in 5V, 12V, 15V, and 48V output options, with high input to output efficiency

Bel Power Solutions’ 0RQB-50Y05x series isolated DC/DC converter provides 50 W of output power from wide input voltage ranges: 24 V, 48 V, 72 V, 96 V, and 110 V typical with a maximum of 154 V. The quarter-brick converters provide multiple output voltage options: 5 V, 12 V, 15 V, and 48 V. This converter can also provide a 5 V / 5 mA auxiliary supply. When a large hold-up capacitor is added, the converter can still work up to 12 ms when the input supply is interrupted. Bel Power Solutions’ isolated DC/DC converters feature remote on/off, input undervoltage protection, output overvoltage protection, overcurrent, and short-circuit protection. The conformal coated PCB is used for environmental ruggedness for industrial, railway, and other harsh environment applications.


  • Input voltage: 14.4 VDC to 154 VDC
  • I/O isolation voltage: 3,000 VDC
  • Ambient temperature: -40°C to +105°C
  • Hold-up function
  • Remote on/off
  • Input overvoltage lockout
  • Input undervoltage protection
  • Output overvoltage protection
  • Overcurrent and short circuit protection
  • Approved to IEC/EN and CSA/UL 62368-1
  • Class II, Category 2, isolated DC/DC converter (refer to IPC-9592B)

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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