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Did varistor having polarity how you will place the component and how you will check the component status?
Wiki User
∙ 13y ago
Varistors are not polarity sensitive.
Now I'm pretty sure that the device in question is a varistor. I googled for SAS-820KD05, found several references but unfortunately no data sheet - maybe you have more luck.
One main criterium for selecting a varistor is the varistor voltage - as long as the voltage applied to the varistor is below the varistor voltage, it will behave like a capacitor. When the voltage is above, e.g. caused by a transient, it acts as a resistor, shorting this transient. Another important value is the max. pulse current a varistor can withstand.
Wiki User
∙ 13y ago
jec888
Varistors are not polarized.
The varistor is generally used in parallel in the circuit. When the voltage across the resistor changes sharply, the short circuit of the resistor will fuse the current fuse and play a protective role.
----We're JYH HSU(JEC) Electronics Ltd (or Dongguan Zhixu Electronic Co., Ltd.), an electronic components manufacturer. You may Google search "JYH HSU" to find our official website.
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