INR7D220K varistors equivalent, zinc oxide varistors.
* Wide operating voltage (V1mA : 18~1800V )
* Excellent clamp voltage ratio
* Fast response time to transient overvoltage
* Low stand by power
* Low l.
* AC/DC Power LINE Overvoltage Protection
* Semiconductor / Solenoid / Switch protection
* Telecommunication.
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