5KP40AHE3/73

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TVS - Diodes

TVS (transient voltage suppressors) diodes are widely used for protecting equipment and systems from transient overvoltage stresses due to lightning, power cross events, inductive loads, etc. The 5KP40AHE3/73 is among one of the most common used types of uni-directional devices, specifically designed for application in aviation and automotive electronics. In this article, we will discuss the 5KP40AHE3/73 application field and working principle.

5KP40AHE3/73 Application Field

The 5KP40AHE3/73 is a unidirectional device often used for primary level of overvoltage protection. It is RoHS compliant and designed for low surge requirements. It is also designed for bi-directional applications, such as protection and steer for high voltage AC/DC power supplies, or as an HV overload limiter in volatile and high-current applications. The 5KP40AHE3/73 is capable of handling pulse power levels exceeding 200 A (8/20 μs) and is suitable for protecting applications in the automotive, industrial and consumer electronics fields.

Working Principle

TVS diodes are designed to carry higher current than traditional diodes. When the device comes in contact with an overvoltage, the semiconductor material inside the 5KP40AHE3/73 reacts to form a conductive path between the anode and cathode that provides ample current to dissipate the overvoltage.

The 5KP40AHE3/73 contains an integrated steering diode, making it ideal for bi-directional applications. When overvoltage is detected, the 5KP40AHE3/73 automatically shunts it away from the protected circuit, thus protecting it from damage. As soon as the surge is gone, the 5KP40AHE3/73 returns to its original state.

The 5KP40AHE3/73 also features an integrated clamping diode that provides transient protection from overvoltages ranging from 36 volts to 48 volts. This integrated diode helps to ensure a safe and stable operation of the circuit during lightening surges and power cross events. Furthermore, it is designed for durability and withstands typical transient spikes and power cross conditions that occur in most automotive applications.

In addition, the 5KP40AHE3/73 is designed to work within a wide temperature range, with a minimum operating temperature of -40 degrees Celsius. This makes it perfect for use in harsh environment and automotive applications, where fluctuating temperatures make it difficult for regular diodes to provide accurate performance.

Conclusion

In conclusion, the 5KP40AHE3/73 is a uni-directional TVS diode used to protect electronic equipment from overvoltage or power cross events. It is designed for use in high voltage AC/DC power supplies, as well as automotive and industrial electronics applications. With its integrated steering and clamping diodes, the 5KP40AHE3/73 provides reliable protection and stability during voltage spikes and power cross events. It is also designed for durability and optimized for use in harsh environments.

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