The E0503D-2WR3 is a 2W isolated DC-DC converter module from MORNSUN's E_D-2WR3 & F_D-2WR3 series , specifically designed for on-board power systems requiring dual voltages isolated from the input power supply. This model operates with an input voltage range of 4.5V to 5.5V and provides dual regulated ±3.3V outputs with up to ±303mA output current each . Key features include continuous short-circuit protection, ultra-low no-load input current of 8mA, and 3000VDC isolation voltage with high power density and efficiency up to 86% . The module operates reliably over a wide temperature range of -40°C to +105°C and features international standard pinout in a compact DIP package measuring 20.3 x 10.2 x 8.2 mm . It is ideal for applications in pure digital circuits, general low-frequency analog circuits, relay drive circuits, data exchange circuits, and similar applications .