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B0503S-1WR3 Mornsun 5V to 3.3V DC-DC Converter 1W Power Supply Module – Compact SIP Package

399.00 Excluding tax

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This B0503S-1WR3 Mornsun 5V to 3.3V DC-DC Converter 1W Power Supply Module from Mornsun is designed for applications where an isolated voltage is required in a distributed power supply system. They are suitable for pure digital circuits, low frequency analog circuits, relay-driven circuits and data switching circuits.

Equipped with numerous features, including a compact SIP package, high efficiency and an operating temperature of -40°C to +105°C.


  • Meet UL, CE requirements.
  • Continuous short-circuit protection
  • No-load input current as low as 5mA
  • Operating temperature range: -40℃ to +105℃
  • High efficiency up to 85%
  • Isolation voltage:1.5K VDC/min, 3K VDC/1s
  • International standard pin-out
  • Compact SIP package
  • UL62368, EN62368 approval


  • Model Number:            B0503S-1WR3
  • Input Voltage range:    4.5-5.5 V
  • Nominal voltage:         5 Vdc
  • Output voltage:           3.3V
  • Output current:           303/30(mA)
  • Wattage:                    1W
  • Isolation Voltage:        1.5 kVdc/min, 3KVdc/s
  • Package:                    SIP
  • Size:                          11.60mm(Length) X 6.00mm(Width) X 10.16mm (Height)
  • Weight:                      1.3gm


* product image for illustration purposes only. actual product may vary.


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