jbcapacitors blog - Varistorshttps://www.jbcapacitors.hk/ISO 9001:2008 Manufacturer for Plastic Film Capacitors. - RainbowSoft Studio Z-Blog 1.8 Arwen Build 90619zh-ENCopyright 2010 www.jbcapacitors.hk. Some Rights Reserved. MLCC-Capacitors Thu, 23 Apr 2026 11:51:43 +0800Why Zinc Oxide MOVs Are Preferred for Surge Protectiona@b.com (admin)https://www.jbcapacitors.hk/post/why-zinc-oxide-movs-are-preferred-for-surge-protection.htmlMon, 19 Jan 2026 13:08:06 +0800https://www.jbcapacitors.hk/post/why-zinc-oxide-movs-are-preferred-for-surge-protection.html

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JVX Metal Oxide Varistor promotional image
JVX Metal Oxide Varistors for surge protection evaluation and sourcing reference.

Modern power and industrial electronic designs rely on metal oxide varistors (MOVs) to protect circuits from transient voltage surges caused by lightning, switching events, or unstable power conditions. For engineers and sourcing teams evaluating MOV replacement or alternative options, understanding MOV structure, voltage classes, and application suitability is essential.

This article provides a technical overview of JVX Metal Oxide Varistors, focusing on structure, operating characteristics, typical applications, and class-level alternative selection guidance.

Metal Oxide Varistor Structure Overview

Metal oxide varistor structure illustration
Structure illustration for reference to typical MOV construction.

A metal oxide varistor is constructed using zinc oxide (ZnO) ceramic grains sandwiched between two metal electrodes, resulting in a highly nonlinear voltage-current characteristic.

  • High impedance under normal operating voltage
  • Rapid impedance drop when surge voltage exceeds threshold
  • Surge energy absorption and voltage clamping

JVX Metal Oxide Varistor Key Characteristics

  • Operating temperature: -40°C to +105°C
  • Disc diameters: 5D, 7D, 10D, 14D, 20D
  • Varistor voltage range: 18V to 1800V
  • Compliance: RoHS, REACH

Typical Surge Protection Applications

  • Industrial power supplies
  • AC-DC converters and SMPS designs
  • Home appliance control boards
  • Motor drives and inverter systems
  • Power protection modules
Selection reminder: Final suitability must be verified based on system voltage, surge level, and applicable safety standards.

Class-Level MOV Alternative Selection Guidance

JVX Metal Oxide Varistors are designed to align with common industry MOV voltage and disc-size classes. Comparisons are provided at the class level only and do not constitute direct part-number cross references.

Varistor Voltage (V₁mA) Disc Diameter JVX Series Comparable MOV Class Typical Brands Referenced
470V (471K) 7mm JVX07D471K V07 class Vishay, TDK, Bourns
470V (471K) 10mm JVX10D471K V10 class Vishay, TDK, Bourns
470V (471K) 14mm JVX14D471K V14 class Vishay, TDK, Bourns
470V (471K) 20mm JVX20D471K V20 class Vishay, TDK, Bourns

Watch: How Metal Oxide Varistors Protect Circuits

Explore JVX Metal Oxide Varistors

Explore the JVX MOV series and contact jb for selection and application support.

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]]>Varistorshttps://www.jbcapacitors.hk/post/why-zinc-oxide-movs-are-preferred-for-surge-protection.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1197https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1197&key=080728aaUnderstanding Surge Protection: How jb JVX MOV Keeps Your Devices Safea@b.com (admin)https://www.jbcapacitors.hk/post/understanding-surge-protection-how-jb-jvx-mov-keeps-your-devices-safe.htmlTue, 25 Mar 2025 14:23:05 +0800https://www.jbcapacitors.hk/post/understanding-surge-protection-how-jb-jvx-mov-keeps-your-devices-safe.html In today's world, our electronic devices and circuits are vulnerable to sudden power fluctuations. Voltage surges, caused by lightning strikes, power grid switching, or equipment failures, can severely damage sensitive electronics, affecting their performance and lifespan. These surges can lead to costly repairs or replacements.

Why Surge Protection Is Essential

Surge protection is crucial for safeguarding sensitive electronic equipment from voltage spikes. Without proper protection, even small surges can cause system failures or permanent damage. Metal Oxide Varistors (MOVs), such as the jb JVX MOV, absorb excess voltage and redirect the surge to the ground, preventing it from reaching the sensitive components of your devices.

jb JVX MOV: Superior Surge Protection for Your Devices

The jb JVX MOV is an excellent choice for protecting your electronic devices from voltage surges. Here's why:

  • High Surge Absorption Capacity: The jb JVX MOV effectively absorbs high voltage surges and redirects them to the ground, keeping your circuits intact and functional.
  • Long-Term Durability: With its robust design, the jb JVX MOV withstands repeated surges without degrading, offering a long service life even in demanding environments.
  • Broad Applications: Suitable for industrial equipment, power management systems, consumer electronics, and automotive electronics, making it a versatile solution for various industries.

MOV vs. Other Protection Technologies

While several surge protection technologies are available, the jb JVX MOV excels due to its unique advantages. Compared to other devices like TVS diodes, MOVs offer better surge handling capabilities, making them the preferred choice for engineers and designers. MOVs are also more cost-effective, providing efficient surge protection without compromising performance.

Conclusion

Choosing the right surge protection device is vital to ensure the longevity and reliability of your electronic circuits. The jb JVX MOV offers high surge protection performance, durability, and flexibility, making it an ideal choice for a wide range of applications.

Protect your devices and circuits from harmful voltage surges with jb JVX MOV today.

Get in Touch with Us

Email: info@jbcapacitors.com

Website: www.jbcapacitors.com

Product Page: jb JVX Metal Oxide Varistor

Understanding Surge Protection: How jb JVX MOV Keeps Your Devices Safe

]]>Varistorshttps://www.jbcapacitors.hk/post/understanding-surge-protection-how-jb-jvx-mov-keeps-your-devices-safe.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1162https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1162&key=e286bf9ejb-Competitive price for Varistor, also known as MOVa@b.com (admin)https://www.jbcapacitors.hk/post/jb-Competitive-price-for-Varistor-also-known-as-MOV-20230705.htmlWed, 05 Jul 2023 14:55:39 +0800https://www.jbcapacitors.hk/post/jb-Competitive-price-for-Varistor-also-known-as-MOV-20230705.htmlJVA - Zinc Oxide Varistors is one of our strong product line, the fast lead time with good quality. It is also known as Metal Oxide Varistor (MOV) from 07D to 20D.
Product video: https://www.youtube.com/watch?v=gtoB83ienm8 

Features:
1. Round Varistor element, leaded.
2. Low leakage current.
3. Excellent Voltage ratio, Wide Voltage & energy ratio.
4. High performance in clamping voltage characteristics.
5. Low standby power and no follow on current.

Applications:
1.Varistors currently have widespread application in protecting power and signal level electrical circuits against dangerous voltage surges.
2.Surget protection in communication, measuring and controller electronics.

jb-Competitive price for Varistor, also known as MOV

]]>Varistorshttps://www.jbcapacitors.hk/post/jb-Competitive-price-for-Varistor-also-known-as-MOV-20230705.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1088https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1088&key=f1c0e2cfjb Capacitors Company produce various of capacitorsa@b.com (admin)https://www.jbcapacitors.hk/post/jb-Capacitors-Company-produce-various-of-capacitors-20220525.htmlWed, 25 May 2022 14:55:14 +0800https://www.jbcapacitors.hk/post/jb-Capacitors-Company-produce-various-of-capacitors-20220525.htmljb Capacitors Company is an old ISO manufacturer, we provide our products with competitive price, reliable quality and short delivery time, around 5~7 weeks. Some hot items have stocks.

Our strong capacitors series are Plastic film capacitors, Aluminum radial Ecaps, SMD Aluminum Ecaps, Polymer Aluminum Solid Capacitors, Ceramic Capacitors, Tantalum Capacitors and Super Capacitors.

We have wide series can be excellent replacement of Epcos, Panasonic, Samwha, Nichicon, NIPPON CHEMI-CON, Rubycon, Elna, SAMXON, and YAGEO.

Please contact us with your inquiry! or ask for free samples!

]]>Varistorshttps://www.jbcapacitors.hk/post/jb-Capacitors-Company-produce-various-of-capacitors-20220525.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1051https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1051&key=7f0d36b7jb JVA Series-- Zinc Oxide Varistorsa@b.com (admin)https://www.jbcapacitors.hk/post/jb-JVA-Series-Zinc-Oxide-Varistors-20220125.htmlTue, 25 Jan 2022 13:19:27 +0800https://www.jbcapacitors.hk/post/jb-JVA-Series-Zinc-Oxide-Varistors-20220125.htmljb offers different type of passive component including capacitor and varistor. Not only capacitors, we can provide high quality for Varistor.
It is Zinc Oxide Varistors JVA Series, A varistor is an electronic component with an electrical resistance that varies with the applied voltage.

Its features are on below:
* Round Varistor element, leaded.
* Low leakage current.
* Excellent Voltage ratio, Wide Voltage & energy ratio.
* High performance in clamping voltage characteristics.
* Low standby power and no follow on current.

It can be used on Multi Meter, LED Driver, application in protecting power and signal level electrical circuits against dangerous voltage surges. If you have more questions, please contact jb sales directly.

]]>Varistorshttps://www.jbcapacitors.hk/post/jb-JVA-Series-Zinc-Oxide-Varistors-20220125.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1039https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1039&key=bbd397c8jb JVA - Zinc Oxide Varistorsa@b.com (admin)https://www.jbcapacitors.hk/post/jb-JVA-Zinc-Oxide-Varistors-20210107.htmlFri, 07 Jan 2022 10:10:05 +0800https://www.jbcapacitors.hk/post/jb-JVA-Zinc-Oxide-Varistors-20210107.htmlWe design and manufacture high quality Zinc Oxide Varistors Series.  A varistor is an electronic component with an electrical resistance that varies with the applied voltage.
Varistors currently have widespread application in protecting power and signal level electrical circuits against dangerous voltage surges.
Zinc oxide varistors are electronic ceramic materials whose electrical behavior is dominated by grain-boundary interface states.

They exhibit a highly nonlinear current-voltage relation with a 5% change in voltage serving to increase the current flow an order of magnitude or more.

If you need this products, please mail us freely. We will be glad to offer you the price information and the most suitable products for you.

jb JVA - Zinc Oxide Varistors

]]>Varistorshttps://www.jbcapacitors.hk/post/jb-JVA-Zinc-Oxide-Varistors-20210107.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=1037https://www.jbcapacitors.hk/cmd.asp?act=tb&id=1037&key=d6c49636jb Hot seller series-- JVA Zinc Oxide Varistorsa@b.com (admin)https://www.jbcapacitors.hk/post/jb-Hot-seller-series-JVA-Zinc-Oxide-Varistors-20210119.htmlTue, 19 Jan 2021 13:31:49 +0800https://www.jbcapacitors.hk/post/jb-Hot-seller-series-JVA-Zinc-Oxide-Varistors-20210119.htmlDear Friend,

Happy new year 2011. Now we have very good support for JVA Zinc Oxide Varistors, we offer high quality, best price and short delivery time.
If you have needs for such item, please contact us asap, we’ll try best to give full support for you, dear.

JVA Zinc Oxide Varistors
• Varistors currently have widespread application in protecting power and signal level electrical circuits against dangerous voltage surges.
• Surget protection in communication, measuring and controller electronics.

JVA - Zinc Oxide Varistors Introduction
Zinc oxide varistors are electronic ceramic materials whose electrical behavior is dominated by grain-boundary interface states. 
They exhibit a highly nonlinear current-voltage relation with a 5% change in voltage serving to increase the current flow an order of magnitude or more.

jb Hot seller series-- JVA Zinc Oxide Varistors

]]>Varistorshttps://www.jbcapacitors.hk/post/jb-Hot-seller-series-JVA-Zinc-Oxide-Varistors-20210119.html#commenthttps://www.jbcapacitors.hk/https://www.jbcapacitors.hk/feed.asp?cmt=989https://www.jbcapacitors.hk/cmd.asp?act=tb&id=989&key=993b41a6