Key Advantages:

 - Precision Fixed Operating Frequency (134kHz)

 - Advanced Burst-Mode operation consumes under 0.1W at 265VAC and no load (FSD210 only)

 - Internal Start-up Switch and Soft Start

 - Under Voltage Lock Out (UVLO) with Hysteresis

 - Pulse by Pulse Current Limit

 - Over Load Protection (OLP)

 - Internal Thermal Shutdown Function (TSD)

 - Auto-Restart Mode

 - Frequency Modulation for EMI

Major Parts:

 - CED01N6A/WFU1N60/WFU2N60 (2A/600V,1A/600V ,Mosfet, CET/Wisdom )

 - LVT817C (4 pin Opto_Coupler ,Liteon)

 - UTC431 (Voltage Reference ,TO92/SOT23 ,<0.5%> ; YW-UTC)