RQB40W12 & RQB150W3 Series:40W&150W ¼ Brick Type Wide Input DC-DC Converter

By: Frank Chen / Product Manager

MEAN WELL has subsequently launched various encapsulated module type, enclosed type, and DIN rail type products for railway applications, including 8~480W products in the RSDW/RDDW/RSD/DDR product series (details refer to table below). MEAN WELL is now launching the new ¼ brick type 40W RQB40W12 (12 : 1 14~160Vdc input) and 150W RQB150W3 ( 3 : 1  66~160Vdc input) product series to cover more application power requirements.
Key product features include: ultra-wide input range that covers common voltages used globally in railway applications (24 /36 /48 /72 /96 /110Vdc), -40~+90°C wide operating temperature, compatible with external capacitors to support 10~30ms hold up time, 2KVAC/3KVAC high isolation voltages, complete protection features and much more. The RQB40W12 and RQB150W3 are suitable for railway, tram, bus, information technology equipment, industrial automation, communication, DC UPS systems, battery voltage regulation, and equipment that require reinforced isolation levels.



  • Ultra-wide input range:
    RQB40W12 : 14~160Vdc (12 : 1)
    RQB150W3 : 66~160Vdc (3 : 1)
  • 4KVac I/O isolation
  • Internal gel potting for improved anti-vibration, dust proof, and moisture proof capabilities
  • -40~+90oC ultra-wide operating temperature range
  • IP-OP isolation: 2KVAC (RQB40W12), 3KVAC (RQB150W3)
  • Protections: Short circuit / Overload / Over voltage / Over temperature / Input under voltage / Remote ON/OFF control
  • Trimming output voltage ± 10%
  • Safety approval:
    Railway : EN50155 / EN50121-3-2
    ITE : UL62368-1 (40W only) , EN55032,  EAC, CE, UKCA
  • Ultra-low-profile, dimensions (LxWxH): 57.9x36.8x12.7mm
  • 3 years warranty

RQB40W12 Series   RQB150W3 Series