A chip varistor (variable resistor) is a static electricity countermeasure component for digital mobile devices. Human activities have become global in a short period of time, and this has raised the need for mobile devices (cellular phones, PDAs, notebook computers, DVCs, etc.) to have high-speed data processing capacities and to become more sophisticated, in addition to being even more compact and low-profile. Moreover, the expanding range of human activities has also raised the need for them to withstand extremely severe environmental conditions, including in-vehicle use, outdoor use, or use in low-humidity environments or dusty environments. As devices become more compact, low-profile and sophisticated, they have begun to use high-performance IC components, which has made the improvement of electromagnetic immunity and withstand voltages even more difficult. In particular, an electrostatic discharge (ESD) countermeasure is absolutely necessary for protecting mobile devices from malfunctions or IC damage. TDK-EPC offers the AVR-M/AVRL series as compact and sophisticated static electricity countermeasure components. Please select products according to your conditions of use, such as frequency.