9401260000

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Maximum AC Volts:	35V
Maximum DC Volts:	45V
Varistor Voltage (Typ):	56V
Current - Surge:	2kA
Energy:	--
Number of Circuits:	2
Operating Temperature:	--
Mounting Type:	Chassis Mount
Package / Case:	Module

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TVS - Varistors, MOVs

A Transient Voltage Suppression (TVS) device is an electrical component that is designed to protect connected equipment from the damaging effects of ElectroStatic Discharge (ESD) and electrical transients. TVS devices are used primarily in industries such as automotive, consumer electronics, industrial designs, and military/aerospace. They are also used in consumer electronics such as cell phones, PDAs, and laptop computers. There are two main types of TVS devices: Varistors and Metal Oxide Varistors (MOVs). Varistors are voltage dependent silicon semiconductors that are typically constructed with stacks of metal film layers that are designed to reduce overvoltages. MOVs are constructed using zinc oxide as the main active element and are designed to reduce power surges.

Varistors (VDRs)

Varistors (VDRs) are used in a variety of electronic hardware to provide protection from overvoltage and electrostatic discharge (ESD). They are typically made of a ceramic body filled with a variety of metal oxide pellets, usually containing zinc oxide. When a varistor is connected to a circuit it acts like a diode, allowing current to flow in one direction but blocking any current flowing in the other. When the voltage applied across the varistor exceeds a certain level (known as the breakdown voltage) the pellet inside it will break down, allowing a higher current to flow, effectively dissipating the energy from the transient. Varistors have a wide variety of uses, including protecting sensitive electronics from power surges, ESD, line transients, and other transient voltages. They can also be used to limit the magnitude of overvoltage applied to a circuit, reduce electromagnetic interference, or as an inexpensive way of regulating voltage for devices such as home appliances.

Metal Oxide Varistors (MOVs)

Metal Oxide Varistors (MOVs) are voltage-dependent semiconductor devices. They are designed to suppress overvoltage and power surges which may be caused by electrostatic discharge (ESD) or lightning strikes. MOVs are constructed using a metal oxide as the active element, usually zinc oxide. Unlike varistors, MOVs are not designed to conduct current on the low-voltage side, only the high-voltage side.When the voltage applied across a MOV exceeds the breakdown voltage, the zinc oxide active element breaks down, allowing current to flow. As the junction heats up, it will dissipate the energy from the transient. The MOV will continue to conduct current until the voltage is decreased to a safe level. MOVs are commonly used in AC power lines, electronic equipment, automotive electronics, and consumer electronics. They are also commonly used in circuit protection applications such as power supplies, circuit breakers, lighting systems, and UPS systems.In conclusion, TVS devices are an important component used to protect electronic circuits from the damaging effects of ElectroStatic Discharge (ESD) and power surges. Varistors and MOVs are two of the more popular types of devices used in this application field, each providing effective protection from overvoltage and ESD. They are widely used in a variety of industries and circuit protection applications, making them a crucial component of electronics and electrical systems.

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