An EMI filter, or electromagnetic interference filter, is an electronic passive device which is used in order to suppress conducted interference that is present on a signal or power line. EMI filters can be used to suppress interference that is generated by the device or by other equipment in order make a device more immune to electromagnetic interference signals present in the environment. Most EMI filters consist of components that suppress differential and common interference. Specifications: Model:  HA28W-6A Rated Current: 6A Work Frequency: 50/60Hz Rated Voltage: 250V AC Hi-Pot Test(2senond): 1760VDC（P-N）2000VAC(P-E) Temperature Range: From -25 degree to +85 degree Applications for EMI Filters: Data lines Secondary power supply lines for digital audio / video and communications equipment Computer motherboards USB hubs Printers Hard disk drives CD and DVD ROMs AC adapters Electronic musical instruments Package Included: 1 x EMI Filter HA28W-6A