B72220S3321K101

Varistor Voltage (Typ):	510V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	1000pF @ 1kHz
Number of Circuits:	1
Energy:	320J
Current - Surge:	12kA
Varistor Voltage (Max):	561V
Series:	SuperioR
Varistor Voltage (Min):	459V
Maximum DC Volts:	420V
Maximum AC Volts:	320V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS- Varistors, MOVs

TVS or Transient Voltage Suppressors are semiconductor devices made to protect and manage transient voltage events. Their basic properties enable them to reduce high voltages to safe levels, and providing additional protections against lightning strikes and other electrical disturbances. TVS can be used to protect both AC and DC circuits, as well as both Analog and Digital signal lines. Varistors are one of the types of TVS devices which act as voltage-dependent resistors. They are made up of semi-conductive materials such as zinc oxide. When a high voltage is applied, these materials undergo a “zincing” process, which produces a conductive path across the material and reduces the voltage across it. The greater the voltage applied the more the current will be reduced.Metal oxide varistors (MOVs) are also a type of TVS, and they have similar properties to varistors in terms of voltage protection. These devices are constructed from metal oxides such as oxide titanate, zinc oxide and Al2O3. As with varistors, when exposed to high voltages MOVs can open up a conductive path and reduce the voltage. The major advantage of MOVs over varistors is that they have a much lower capacitance and can be used to provide additional protection to switching devices as well.B72220S3321K101 is an MOV manufactured by EPCOS Bourns. It is designed to provide overvoltage protection for both AC and DC line protection, as well as to protect against electrostatic discharge (ESD). It is rated for overvoltage protection of up to 1000 V, and has an operating temperature range of -55 degrees Celsius to +150 degrees Celsius. It also has a capacitance of 22 pF, and a maximum peak power rating of 180 W.The working principle of B72220S3321K101 is similar to that of other MOVs. It acts as a voltage-dependent resistor, and when it is exposed to a high voltage, it will conduct current and reduce the voltage across it. This reduces the likelihood of destructive voltage spikes and surges damaging surrounding electronics. As well as providing overvoltage protection, the B72220S3321K101 also offers ESD protection, making it suitable for protecting sensitive electronics from ESD-induced damage.The B72220S3321K101 is suitable for a variety of applications, including motor control, power line conditioning, HVAC systems, as well as general electronic device protection. It can also be used in personal protection devices such as surge protectors and power strips. This makes the B72220S3321K101 an ideal choice for a variety of applications that require overvoltage and ESD protection.

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