ERZ-V20D271

Varistor Voltage (Typ):	270V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	1300pF @ 1kHz
Number of Circuits:	1
Energy:	190J
Current - Surge:	10kA
Varistor Voltage (Max):	303V
Series:	ZNR®
Varistor Voltage (Min):	247V
Maximum DC Volts:	225V
Maximum AC Volts:	175V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Overview

ERZ-V20D271 is a Varistor from the TVS - Varistors, MOVs family. It is an unencapsulated, bi-directional Varistor with low capacitance, designed for providing surge protection in low voltage circuits. It is a unipolar device made of zinc oxide based ceramic discs, with a varistor voltage of 20 volts.

Application field

ERZ-V20D271 is mainly used for providing over-voltage protection in a wide range of applications including consumer electronics, communications, lighting, automotive, industrial control and automation, etc.In consumer electronics, it is used for eliminating voltage spikes that may occur during surges of alternating current (AC) or direct current (DC). It is also used in communications and lighting systems for suppressing transients that may be caused by lightning strikes or power outages.In automotive, it can be used to protect electronics systems from voltage spikes due to sudden acceleration or deceleration. It can also be used in industrial control and automation systems to provide surge protection for sensitive components.

Working principle

When a surge of voltage is applied to the ERZ-V20D271, it will instantaneously limit the voltage applied by the surge. It does this by changing its physical properties in order to reduce the flow of electricity. The key component of ERZ-V20D271 is a ceramic disk consisting of zinc oxide particles that are embedded in an insulating material. When a surge of voltage is applied, the zinc oxide particles expand, changing their shape and creating a barrier to the flow of electricity. As a result, the voltage applied is reduced.

Conclusion

ERZ-V20D271 represents a convenient and cost effective way of providing surge protection in low voltage circuits. It is suitable for a wide range of applications, including consumer electronics, communications, lighting, automotive, industrial control and automation, etc. Its working principle relies on a ceramic disk made of zinc oxide particles that expand when a high surge of voltage is applied, thus reducing the voltage and providing over-voltage protection.

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