In addition to filtering conducted RF noise, X and Y capacitors are designed to handle voltage transients, protecting the system from damage and preventing a system‘s functions from being corrupted. X and Y capacitors are broken into catagories according to not only X and Y, but also the steady state and transient voltage capability. The IEC 60384-14.3 chart tabulates these and indicates that the lower the numeric suffix, the higher the voltage capability. Design engineers will need to consult the IEC 60384-14.3 specification to determine the exact requirements that need to be met. Selecting the lowest possible capacitance to meet a specific conducted noise requirement often requires trail and error at the bench level, and will depend on a system‘s electrical and mechanical layout. Thus, minimizing the capacitance and component count to meet a system‘s filtering requirements will result in a more cost effective design.