1W,FIXED INPUT, ISOLATED & UNREGULATED single OUTPUT, SMD DC-DC CONVERTER The **MORNSUN B0503T-1W** is a **DC/DC converter** with the following specifications:  

- **Input Voltage Range:** 4.5V–5.5V  
- **Output Voltage:** 3.3V  
- **Output Power:** 1W  
- **Output Current:** 300mA  
- **Efficiency:** Up to 85%  
- **Isolation Voltage:** 1kV DC  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SIP (Single In-line Package)  
- **Regulation Type:** Non-regulated  
- **Protections:** Short-circuit, over-current  

This converter is designed for applications requiring stable power conversion with isolation.