With the rapid development of new energy applications such as photovoltaics, energy storage, and electric vehicles, the selection criteria for circuit protection components are being redefined. The new energy industry has increasingly clear requirements for varistors: they must have higher surge resistance, wider operating temperature range, and better long-term reliability at the same time. Traditional varistors often struggle to balance their lifespan and response speed in complex scenarios such as severe power grid fluctuations and outdoor high temperature and humidity. To address this technological turning point, Yuanlin Electronics has launched a specially optimized new generation of automotive grade varistor series, which fully meets the core indicators of the new requirements for varistors in the new energy industry.
In terms of specific performance dimensions, the new requirements for varistors in the new energy industry are first reflected in the leap in current carrying capacity. New energy systems often face lightning surges of tens of kiloamperes and operational overvoltages, and ordinary varistors are prone to premature degradation. Yuanlin Electronics’ new product adopts multi-layer lamination and current sharing filler technology, which improves the 8/20 μ s impulse current withstand capability to over 15kA, while controlling the voltage offset of the varistor within 10%, accurately meeting the strict requirements of the new energy industry for high current impulse life of varistors.
Secondly, the new requirements for varistors in the new energy industry also include stable operation over a wide temperature range. The internal temperature of outdoor photovoltaic inverters and charging stations can reach up to 105 ℃, and it is necessary to maintain leakage current within the standard in low-temperature environments. Yuanlin Electronics has successfully addressed the thermal stability challenge posed by the new requirements for varistors in the new energy industry by modifying ZnO formulations and packaging and gluing processes to maintain a voltage fluctuation of ≤ 5% and a leakage current below 20 μ A within the temperature range of -55 ℃ to 125 ℃.
In addition, miniaturization and safety compatibility have become the focus of new requirements for varistors in the new energy industry. The increase in system power density forces the reduction of component size, but the creepage distance and safety certification cannot be compromised. Yuanlin Electronics has launched patch type and thin lead type varistors, reducing their volume by 40%. At the same time, they have passed UL, VDE, CQC and other certifications, fully meeting the dual expectations of space utilization and safety redundancy in the new requirements for varistors in the new energy industry. Overall, from photovoltaic combiner boxes to on-board OBCs, from energy storage BMS to charging modules, the new energy industry’s new requirements for varistors are reshaping the technological route of circuit protection. With years of technical accumulation in the field of overvoltage protection, Yuanlin Electronics has mass-produced and shipped more than ten varistor series specially designed for new energy scenarios, and provided EMC testing and selection simulation support. If you are facing difficulties in selecting protective components and frequent failures in new energy projects, please contact Yuanlin Electronics for complete product specifications and testing reports.
