Power loss stays stable
This varistor ceramic relies on oxygen adsorption at the grain boundary to keep the interface states stable, so the power loss does not keep climbing during long-term aging, making it suitable for demanding overvoltage protection.
Cheng, Zhuolin · Rou, Li · Long, Yiwei · Li, Jianying · Li, Shengtao · Wu, Kangning
Journal of Advanced Ceramics 2023
Stable power loss when aged in air
Continuously increasing power loss when aged in nitrogen