2905223

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - Clamping:	--
Technology:	Mixed Technology
Number of Circuits:	1
Applications:	General Purpose
Mounting Type:	DIN Rail
Package / Case:	Module
Supplier Device Package:	Module

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Transient Voltage Suppressors (TVS) - Mixed Technology

Introduction

Transient voltage suppressors (TVS) are an important type of overvoltage protection devices used in a variety of applications. TVS are designed to protect electronic equipment from transients such as electrostatic discharges (ESD), electrical fast transients (EFTs) and electrical surge events. They are available in a range of package options and technologies.Mixed TVS technology combines components of unidirectional (bidirectional) silicon avalanche diode (SAD) and Zener diode technologies to provide superior protection performance. The protection performance of mixed technology TVS devices is determined primarily by their bidirectional current handling capability (IC), peak pulse current (IPP), and breakdown voltage (VBR).

Application Field and Working Principle

TVS devices are available in a wide variety of packages to suit different application requirements. For example, surface-mount (SMD) packages such as SOT563 and SOD523, small-outline integrated circuit (SOIC) packages such as SOT23-6 and SOT23-5, and through-hole packages such as DO-213 are widely used. The working principles of TVS devices are based on their individual components; SADs and Zener diodes. When an overvoltage transient occurs, the SAD component clamps the voltage at a relatively low level; typically between 22 and 28V. The Zener component limits the voltage further, to protect against higher voltage transient events.Mixed technology TVS devices are typically used for ESD and EFT protection as well as power supply line protection. They offer excellent protection of sensitive electronic components from overvoltage transients, such as those caused by lightning strikes. These devices are also suitable for applications that require a combination of small size and very high pulse current capability. TVS devices are also commonly used in automotive and industrial applications. Common automotive applications include powertrain, chassis, and safety systems, while industrial applications include industrial control devices, PLCs, and power supplies. In both cases, they are used to protect against overvoltage transients caused by short-circuit conditions and other unforeseen events.

Conclusion

Mixed technology TVS devices are widely used for overvoltage protection in a range of applications. They offer excellent protection against transients, such as ESD and EFT events, as well as power supply line protection. These devices are available in a range of small-format packages and can provide reliable protection even in high-pulse current applications.

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