EPCOS B722 series Metal Oxide Varistors (MOV)

Features and Applications of B722 series Metal Oxide Varistors (MOV)

The purpose of this article is to briefly illustrate what is possible with Metal Oxide Varistors (MOV) and the features and applications of these varistors manufactured by EPCOS under the B722 series.

Applications

  • Motor drives
  • Lighting
  • Appliances
  • Body electronics & lighting
  • Portable electronics
Associated Products

Part NumberDescriptionStockRFQ
B72232B381K1B722 Series 505 V 385 Vrms 1025 V Clamp 25 kA 1400 pF HighE Block Varistor0RFQ
B72240B751K1Varistor, Circuit Protection; 750Vrms; 2000V; 40000A; Metal Oxide; 1000pF; Wire; 1.4W0RFQ
B72232B751K1Metal Oxide Block Varistor0RFQ
B72240B461K1Var MOV 460VAC 615VDC 40000A 750V Bolt-Down Box0RFQ
B72260B551K1Metal Oxide Block Varistor0RFQ
B72240B251K1Var MOV 250VAC/320VDC 40000A 390V Bolt-Down Box0RFQ
B72232B151K1Var MOV 150VAC/200VDC 25000A 240V Bolt-Down Box0RFQ
Technical Documents

A varistor that is made with a combination of zinc oxide or other kinds of metal oxides such as manganese cobalt etc is called metal oxide varistor. MOVs are same as resistors because it consists of two leads where they don’t have polarity.

What Is A Metal Oxide Varistor | How MOV Protects Circuits From Voltage Spikes


B722 series MOVs are designed to provide reliable and efficient protection against transient voltage events, such as lightning strikes, power surges, and ESD. They are widely used in various industries, including telecommunications, automotive, industrial, and consumer electronics. The MOVs can be used in both AC and DC circuits and are available in various lead forms and packaging options to suit different application requirements.

Features

The main features of B722 series Metal Oxide Varistors (MOV) may be summarized as follows:

1. High surge current capability: B722 series MOVs can handle high surge currents, making them suitable for applications where there is a risk of voltage spikes or surges, such as in power supplies, motor drives, and lighting systems.

2. Wide operating voltage range: B722 series MOVs have a wide operating voltage range, typically from a few volts to several hundred volts, allowing them to be used in a variety of different applications.

3. Low clamping voltage: B722 series MOVs have a low clamping voltage, which means they can protect sensitive electronic components from damage caused by voltage transients without causing any additional damage themselves.

4. Fast response time: B722 series MOVs have a fast response time, typically in the nanosecond range, which means they can respond quickly to voltage transients and limit their impact on the system.

5. High reliability: B722 series MOVs are designed to be highly reliable, with long operating life and low failure rate.

Applications

  • Power supplies

  • Motor drives

  • Lighting systems

  • Telecommunications equipment

  • Home appliances

  • Automotive electronics

  • Industrial equipment

  • Medical equipment

  • Consumer electronics

In general, B722 series MOVs are used in applications where there is a risk of voltage spikes or surges, and where it is important to protect sensitive electronic components from damage caused by these events.


Frequently Asked Questions

What is the maximum voltage rating of the B722 series MOVs?

The maximum voltage rating of the B722 series MOVs varies depending on the specific model, but ranges from 14V to 680V.

What is the maximum energy absorption rating of the B722 series MOVs?

The maximum energy absorption rating of the B722 series MOVs ranges from 0.2J to 14J.

What is the maximum operating temperature of the B722 series MOVs?

The maximum operating temperature of the B722 series MOVs is 85°C.