Welcome to the Vishay BC Components Compact VY1-Series Safety Capacitors product training module. This presentation is intended to give the design engineer a technical overview of X and Y capacitors, including the function, performance, approval agency requirements, selection criteria and classification. In providing this overview, the training objectives include a discussion of Radio Frequency Interference, RFI Suppression and International Safety Standards. Moreover, this PTM will familiarize the designer with Vishay’s BC components VY-Series, including a technical overview, product range and the part numbering system. Finally, a discussion of typical application will enable the designer to know when X and Y capacitors need to be employed as part of a system’s power supply for RFI suppression.