B72220S0441K101 from EPCOS (TDK) is a metal oxide varistor (MOV) used in surge protection designs where transient overvoltage events can threaten power supplies, industrial controls, consumer electronics, and interface circuits. Engineers typically select MOVs in this category to clamp voltage spikes caused by lightning, load switching, or inductive disturbances, helping protect downstream components and improve system robustness. As an EPCOS (TDK) device, this part is positioned for designers seeking a widely recognized protection component family for board-level and power-line related protection tasks. The current lifecycle status for B72220S0441K101 is information not available, so design teams should confirm availability and long-term support directly with the manufacturer or authorized sources before committing to new production. RoHS compliance information is also not available from the provided data. For regulated programs, engineers and procurement teams should verify the latest datasheet, manufacturer declarations, and distributor compliance documentation before sourcing.