Jul. 18, 2022
Varistors are widely used in household appliances, consumer electronics, industry and other fields by virtue of their own advantages. For example, microwave ovens, air conditioners, etc. all have varistors. The operating temperature range of the varistor is -40°C~+85°C. The varistor has stable performance. After it works continuously for 1000 hours at a temperature of +40°C (±2°C) and a relative humidity of about 90%, and then change to condition at room temperature, the voltage change rate of the tested varistor is less than 10%.
With the arrival of summer, the temperature is getting higher and higher, and the varistor is prone to problems when working at high temperature. In fact, there is no problem with the varistor working at high temperature for a short time. Once the varistor works over the temperature range for a long time, the low-resistance linearization of the varistor gradually intensifies, the leakage current increases and flows into the weak point, and the material of the weak point melts to form a short-circuit hole, a large current is continuously poured into the short-circuit hole to form a high heat, which will cause the varistor to burn out and catch fire.
Therefore, when using household appliances, especially high-power appliances, we must pay attention to the temperature around the appliance not to be too high, and maintain a normal temperature range to avoid dangerous accidents.
Select a reliable manufacturer when purchasing varistor can avoid a lot of unnecessary trouble. JYH HSU (or Dongguan Zhixu Electronics) not only has full models of ceramic capacitors with guaranteed quality, but also offers worry-free after-sales. JEC factories has passed ISO9001:2015 quality management system certification; JEC safety capacitors (X capacitors and Y capacitors) and varistors have passed the certification of various countries; JEC ceramic capacitors, film capacitors and super capacitors are in line with low carbon indicators.
Causes of Filter Film Capacitor Failures
Jul. 18, 2022
Jul. 18, 2022
Jul. 18, 2022
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