There are many small partners who still do not know the difference between the plug-in varistor and the patch. This article is a brief description for us, hoping that we can help in this regard.
Plug-in varistor refers to a voltage-limiting component that is responsive to voltage changes. Its characteristics are: at a regular temperature, when the voltage exceeds a certain critical value, its resistance will decrease sharply. The current is added rapidly, and the voltage and current are not in a linear relationship. Therefore, the varistor is also called a nonlinear varistor.
The plug-in varistor meets the requirements of the automotive industry and is suitable for the harsh automotive environment. It helps to meet the UL1449 requirements. It is very suitable for the strict temperature requirements of the passenger compartment and the electronic equipment under the hood. Overvoltage hazards caused by jumper lead start and other transient events.
The varistor chip has a wide operating voltage range, DC voltage: 24V 100V, good solderability of lead-free coating, fast response time (less than 1ns), low clamping voltage, conforming to IEC 61000-4-2, 61000-4 -4, and 61000-4-5 standards. Whether it is a plug-in varistor or a patch, we need to understand it before selecting it.