V421DB40

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TVS (transient voltage suppression) devices are widely used in the electronic industry for protection against overvoltage or high-energy surges. Common TVS devices include Varistors, MOVs (metal oxide varistors) and Zener diodes. The ability of TVS devices to protect sensitive electronics from damage due to electrical transients is a major benefit in modern technology.

The V421DB40 is an MOV (Metal Oxide Varistor) device from Littelfuse that is designed for transient voltage suppression and overcurrent protection applications. Its ultra-low leakage current, along with a wide operating temperature range of -55°C to 125°C, make it suitable for a wide range of applications. Additionally, the V421DB40 comes with an enhanced surge capability of up to 4A.

The operating principle of the V421DB40 is based on a MOV\'s resistance characteristics. MOVs are two-terminal nonlinear resistors made from metal oxides of Zinc Oxide, Cobalt Oxide, and other compounds. MOVs have a linear and nonlinear region of operation. Under normal operating conditions, the device operates in linear region of operation with a low and constant resistance. However, in the event of an over-voltage, the device moves into the nonlinear region of operation. The resistance increases significantly, limiting the flow of current, and thus providing over-voltage protection.

The V421DB40 has a broad range of applications, including general purpose surge protection, LCD and LED surge protection, motor surge protection, coaxial and RF protection, computer port (USB and Ethernet port)EFT/ESD protection, automotive EMI filter and SPD (Surge Protective Device) applications. It is well suited for use in automotive, telecommunications, consumer electronics, solar, industrial, medical, aerospace, and other applications.

The V421DB40 is an industry leading transient voltage surge suppressor device that offers excellent ESD and EFT protection. It is a reliable and cost-effective solution for providing effective protection against damage due to surges. The wide operating temperature range makes it suitable for a variety of applications. The V421DB40 is a great choice for high-reliability surge protection applications.

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