The B-20F-38 Ferrite Cable Core EMI 1.5mm manufactured by KEMET is designed to help reduce electromagnetic interference (EMI) in cables used for a variety of applications. This B-20F-38 core is a ferrite core with 1.5mm external diameter and consists of two molded parts made of magnetically active material that are pressed together to form an EMI-attenuating shield for cables. This part has an impedance range of 10kOhms to 100Ohms, a resistance of 0.700mm, an inductance of 250µH, and an attenuation of 40dB at 10MHz and 30dB at 1GHz. Additionally, this ferrite core is RoHS compliant for environmental requirements and has an operating temperature of -25 to 125°C.