VTVS19GSMF-HM3-08 Circuit Protection

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TVS diodes are active components that are used to protect integrated circuits and printed circuit boards from transient events such as electro-static discharge (ESD), over-voltage, over-current, lightning, etc. The VTVS19GSMF-HM3-08 is a low-profile, fast-acting surface mount varistor with high surge capability and high reliability. Its application fields and working principle are discussed in this article.

Application Field

The VTVS19GSMF-HM3-08 is primarily used in automotive electronic systems to protect integrated circuits and printed circuit boards from transient events. This component is designed to meet the stringent requirements of automotive industry application conditions. It also meets the demands of a variety of product designs due to its low-profile design and fast-acting feature. In addition, this component is suitable for various system ESD protection and surge protection applications.

Working Principle

The VTVS19GSMF-HM3-08 features a low clamping voltage, fast-acting and high surge capability, and it can protect a wide range of voltage levels from over-voltage transients. The device utilizes a metal-oxide varistor (MOV) technology to provide excellent ESD, EFT, and lightning surge protection. The MOV is composed of ZnO pellets and electrodes with a wide bandgap and a high breakdown electric field. The MOV also has low conduction losses due to its non-linear resistance. When an over-voltage transient occurs, the MOV is able to quickly clamp and absorb the excess voltage to protect the power system.

The actual surge current rating of the VTVS19GSMF-HM3-08 is dependent on the specific application which determines the component’s ability to pass stored energy. The device’s surge capability is directly related to the series resistance (ESR) and its ability to dissipate energy within its clamping range. The device offers an ESR rating of 0.5Ω which provides improved surge handling capability. In addition, the fast-acting feature allows the device to respond quickly to transient events, which helps reduce the risk of damage to electrical components.

The VTVS19GSMF-HM3-08 is an efficient and reliable high-surge TVS diode that offers a low-profile design and fast-acting feature for effective ESD and surge protection. Its application field is primarily automotive electronic systems, and its working principle is based on a metal-oxide varistor technology, which is able to quickly clamp and absorb excess voltage to protect the power system.

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