MOV Varistor
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MOV Varistor

The Metal Oxide Varistor or MOV is a voltage dependent, nonlinear device that provides excellent transient voltage suppression. The Metal Oxide Varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges.

We are a professional enterprise engaged in the manufacture and sale of MOV Varistor.

MOV Varistor

MOV Varistor Manufacture Process:

MOV Varistor Advantages:

The major advantage of MOV over Silicon Carbide Varistor is its low leakage current. MOV has a very low leakage current at normal operating conditions. Also MOV has a very high levels of non-linear current voltage characteristics.

MOV Varistor Application:

MOV Varistor is normally used for suppressing inburst transient in consumer electronic and industrial electronic, such as LED Light, energy meter, switch, power strip, etc. MOV can be also applied in tele communication and cable network equipment.

MOV Varistor is normally used for LED Light
MOV Varistor is normally used for power strip
MOV Varistor is normally used for industrial electronic

YINT Brand Introduction:

YINT Electronics, established in 2006, a leading provider of circuit protector and solution service, integrates R&D, production, sales and service in one, it has its own intellectual property rights in all the products, the products are mainly sold to more than 20 domestic cities and more than 10 countries worldwide. Our headquarter is in Shanghai and our factory is located in Wuhu, now we have 200 employees and 50 employees among them are in charge of management, design and techniques.

Production Capacity and Equipment:

YINT has been accredited with ISO9001 quality system certification in 2007 and now we have 19 Certificates of Utility Model Patent. Our company has imported high-tech production and testing equipment, all the products comply with RoHS requirements; many series of products are certified by international safety regulatory agencies, such as UL, VDE, CSA, etc.


2019 Korea Electronics Show (KES)

2019 Korea Electronics Show (KES)

Electronica China 2019

Electronica China 2019

Electronica China 2020

Electronica China 2020

Questions you may be concerned about

1. Can you provide samples of MOV Varistor? is it free or extra?

Free samples for testing.

Professional electronic solutions according to customers' demands.

Customized MOV Varistor products.

2. Can you provide competitive prices for MOV Varistor?

1) The price is different according to customers' needs and quantity requirements.

2) The customized products will incur additional production costs.

3. What is your payment term?

100% TT in advance in first stage.

4. MOV Varistor Packing and Delivery Issues:

1) The MOV Varistor will be packed in reel or plastic case type, as photos.

MOV Varistor Packing

2) Envelope for small quantity, carton for large quantity, extra wraping materials will be applied to long-distance transportation.

Metal Oxide Varistors Packing

3) Lead time: usually within 10 working days after payement.

4) Port: Shanghai

5) Shipping Methods: DHL, Fedex, by sea, etc(Negotiable)

5. How is your quality control carried out?/ How do you ensure MOV Varistor quality?

1) We have a professional QC Department, every part must be passed by QC from our company before shippment.

2) If there are any quality problems after you receving the products, please make sure that all items are in their original conditions for refund or replacement.

3) Our technical engineer team provides professional solutions and other technical consulting services.

4) Our professional foreign trade team follows up all the delivery process of each order.


1. What is metal oxide varistor?

A Metal Oxide Varistor (MOV) is a protection component used in power supply circuits that is powered directly from AC mains. It is used to protect the circuit from high voltage spikes by varying its resistance.

2. How does metal oxide varistor work?

When exposed to high transient voltage, the MOV clamps voltage to a safe level. A metal oxide varistor absorbs potentially destructive energy and dissipates it as heat, thus protecting vulnerable circuit components and preventing system damage. Varistors can absorb part of a surge.

3. What are metal oxide varistors used for?

It shows wide applications in protecting devices as communication line protection, in microprocessor and power supply protection. In AC protection and cable TV surge protection etc.

4. Do varistors have polarity?

There is no polarity. So you can mount MOVs in any direction. Other kinds of TVS, such as unipolar TVS diodes do have polarity, and it is typically indicated with a ring, like normal diodes.

5. How do you test metal oxide varistor?

Connect the two test leads (regardless of positive and negative) to the two ends of the resistor to measure the actual resistance value. To improve the measurement accuracy, the range is selected according to the nominal value of the measured resistance. Due to the non-linear relationship of the ohm scale, the middle section of the scale is fine. Therefore, the pointer value should fall as far as possible to the middle of the scale, that is, within the range of 20% to 80% of the radian of the full scale. According to the resistance error level, an error of ± 5%, ± 10%, or ± 20% is allowed between the reading and the nominal resistance, respectively. If the error range is exceeded, the resistor has changed the standard value.

6. What happens when a varistor fails?

Under different current conditions, failure modes include electrical puncture ,physical cracking, and thermal runaway. Cracking happens because varistors are basically a ceramic material, and hitting them with a sharp high-amplitude surge is like hitting a dinner plate with a hammer.

Our MOV Varistor are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!

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