20KPA256CA-B Circuit Protection

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TVS (Transient Voltage Suppression) diodes are used to protect a wide range of devices from electrical transients caused by power supply surges, lightning strikes, electro-static discharge, and other radiation. The 20KPA256CA-B is a particular type of TVS diode designed specifically to protect automotive applications from transient voltages of up to 8kV. In this article, we will discuss the application field and working principle of the 20KPA256CA-B.

Application Field

The 20KPA256CA-B is specifically designed for automotive applications, such as automobiles, trucks, and buses. It can also be used in recreational vehicles, electric scooters, and other light electric vehicles. It is suitable for use in many applications in a standard automotive environment, including but not limited to:

• Power/voltage supplies
• System components in an automobile
• Oscillators
• Safety systems
• Airbags
• Radiators
• Blowers

The 20KPA256CA-B is designed to protect against a wide range of transients, including electrostatic discharge, voltage surges, and lightning strikes. The diode, when triggered, will immediately clamp any voltage that is applied to it so that it does not reach the device being protected. This is done by diverting the voltage away from the system and dissipating it as heat in a controlled manner. This protects the system from damage due to an unexpected surge in voltage.

Working Principle

The 20KPA256CA-B utilizes a Transient Voltage Suppression diode in order to protect a variety of automotive applications. When triggered, the diode diverts the incoming voltage away from the system, causing the voltage to dissipate as heat. This immediately reduces the voltage level to a safe level that will not damage the system.

The TVS diode works by utilizing a reverse current junction. The reverse current junction is composed of a junction diode and multiple surge protection devices. When an incoming surge arrives, the diode acts as a reverse-biased diode, allowing current to flow into the junction diode and the protection devices. The voltage is then diverted away from the system and the excess energy is dissipated as heat. The protection devices then block further current flow, thus preventing further damage to the system.

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