This paper will explain Electro-Magnetic Interference (EMI) and its effect on FCC certification. Alternative approaches to mitigating EMI will be mentioned, and the benefits of using Spread Spectrum Clock Generators (SSCG) explained. Finally the paper will describe the Fujitsu SSCG family, which is designed to reduce the overall bill of materials (BOM) cost, shorten the design cycle time, and enable first-pass FCC certification success without compromising system performance.