15KPA17A-HR

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    Transient Voltage Suppression (TVS) diodes are also known as surge-protection diodes and are the most popular form of ESD protection. They are often referred to as a “last line of defense” because they are used to protect next-level circuits from high-voltage events or electromagnetic interference (EMI). The 15KPA17A-HR is a TVS diode designed specifically for high-reliability applications, such as industrial and automotive electronics, where high surge voltage protection is required. This article explains the application field and operating principle of the 15KPA17A-HR.

    A TVS diode is a special type of diode that provides relatively high surge current protection in comparison to other diodes. It has various applications, including protecting a circuit from impulse current, lighting transient, electrostatic discharge (ESD) and electrochemical noise. A TVS diode can also be used to protect sensitive components from voltage spikes. The 15KPA17A-HR is a unidirectional TVS diode, which means that it blocks current in one direction only, allowing current flow in the opposite direction. It is designed to protect against ESD, with a clamping voltage of 15 volts.

    The 15KPA17A-HR is a three-pin diode package that is mounted on a printed circuit board. It has a rated power dissipation of 0.5W, a clamping voltage of 15 volts, a thermal resistance of 16 K/W, and a peak surge current of 250A. It is most commonly used for protection from ESD, electrostatic transients, and overvoltage spikes in PCBs. It is also widely used in automotive electronics, industrial equipment, and consumer electronics.

    The 15KPA17A-HR operates based on the principle of avalanche breakdown—a phenomenon where electric fields in a reverse-biased junction exceed the breakdown voltage, resulting in current avalanche. This phenomenon is utilized by the 15KPA17A-HR to absorb transient current from ESD, delaying the current risetime and dissipating the power over a longer period of time, thus preventing the circuit from damage. When an ESD strike occurs, the 15KPA17A-HR allows the current to flow through it, rather than through the circuit, thus protecting the circuit from damage.

    The 15KPA17A-HR is ideal for use in high-reliability applications such as automotive and industrial electronics, where high surge voltage protection is required. It is also capable of withstanding high surge current, making it ideal for protecting sensitive components from voltage spikes. The device has a built-in thermal shutdown feature that automatically shuts off the diode when the temperature rises above a certain level. This helps avoid damage to the diode and other essential components.

    In conclusion, the 15KPA17A-HR is an ideal lean tack fuse designed specifically for high-reliability applications. It is capable of withstanding high surge current, and can protect sensitive components from voltage spikes. It operates based on the principle of avalanche breakdown, allowing it to absorb transient current from ESD and other sources, which helps protect the circuit from damage. It is widely used in automotive and industrial electronics, as well as consumer electronics, due to its high reliability and excellent surge voltage protection.

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