This model applies to analog circuit which is noise-sensitive. Put FC-LX1D on to the input of AC/DC module can ensure the module meet Surge level of IEC/EN61000-4-5 ±2KV (2Ω internal resistance)/±4KV (12Ω internal resistance). Put FC-LX1D2 on to the input of AC/DC module can ensure the module meet Surge level of IEC/EN61000-4-5 ±4KV (2Ω internal resistance)/±6KV (12Ω internal resistance) and EMI requirement of CISPR22 /EN 55022 Class B. EMC filter used with the MORNSUN AC/DC module, AC/DC module's max. Input voltage must not more than EMC filter's max. Voltage, AC/DC module's max. Input current must less than EMC filter's nominal current.

• Vin (VAC) - 85~305
• Operating Temperature - -40~85¼
• Attenuation Rate - 20dB
• Package - DIP/Chassis/DIN-Rail
• Dimension (mm) - 33.7 x 22.2 x 18 (DIP)
• Supporting Power Supply - AC/DC Converter
• Surge Voltage (KV) - ±2 / ±4

Datasheet Link