Series:	BSPD
Part Status:	Active
Voltage - Clamping:	--
Technology:	MOV
Applications:	General Purpose
Mounting Type:	Chassis Mount
Package / Case:	Module
Supplier Device Package:	Module

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TVS - Mixed Technology

Introduction

Transient Voltage Suppression (TVS) diodes are high-speed, bi-directional, solid-state protection devices used to protect circuits against electrostatic discharge (ESD), electro-magnetic interference (EMI) and other types of overvoltage disturbances. TVS diodes are typically used in high-reliability applications and are available in a wide range of packaging styles, sizes, circuit configurations and operating voltages for use in commercial, industrial, automotive, aerospace, and military equipment. The BSPD400480D2K is a mixed technology TVS diode designed for protection against surges in 121KV ESD protection applications.

BSPD400480D2K Application Field and Working Principle

The BSPD400480D2K is designed for use in 121KV ESD protection applications, such as mobile phones, tablets, computer accessories, gaming consoles and other portable electronics. Its highly reliable structure and robust design make it ideal for use in high-reliability, high-performance electronic applications. The BSPD400480D2K consists of a silicon-based Thyristor and a Zener diode. The Thyristor acts as a high-speed switch and turns on quickly when an overvoltage condition is detected. This triggers the Zener diode which clamps the voltage at the specified value by dissipating energy. The Thyristor acts as a low impedance path when conducting, and acts as an open circuit when not conducting. This allows the device to provide low capacitance and fast response with a minimum of power dissipation.

Design Considerations

When considering the use of the BSPD400480D2K in a given application, the following design considerations should be taken into account: • Operating Voltage – The device supports a wide operating Voltage range of 40V to 480V, with a breakdown voltage of 121KV.• Reverse Power Dissipation – The device’s reverse power dissipation should not exceed 2W for maximum reliability and lifetime.• Leakage Current – The device’s leakage current should not exceed 5A.• Storage Temperature – The device should be stored at temperatures between -20°C and +85°C. • Ambient Temperature – The device should be operated at temperatures between -20°C and +85°C.

Conclusion

The BSPD400480D2K is a high-reliability, high performance Transient Voltage Suppressor (TVS) diode designed for use in 121KV ESD protection applications. The device is composed of a Silicon-based Thyristor and a Zener diode, and is capable of providing low capacitance and fast response to overvoltage conditions, while dissipating a minimum amount of power. This device is highly robust and reliable and is capable of storing and operating at temperatures between -20°C and +85°C. In addition, the device has a reverse power dissipation rating of not more than 2W and a maximum leakage current of not more than 5A. It is important to consider these design parameters when utilizing the BSPD400480D2K in any given application.

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