The CNR-10N511KTRSA is a varistor (voltage dependent resistor) with a through-hole footprint, made by Chinese component manufacturer CNR. It is RoHS compliant and can be used in high-frequency electronic equipment to absorb transient electrical energy to protect components from damage. The physical size of the varistor is 10mm by 5mm, and it has an 11kO operating resistance. It is designed to absorb and limit maximum over-voltage and is rated up to 900VDC Clamping Voltage, 27pF Maximum Capacitance, and 10J Maximum Energy.