SA20HE3/73

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TVS-diodes (Transient Voltage Suppression diodes) are a type of semiconductor device designed to protect against electrical overstress in electronics. They are widely used in a range of applications such as telecommunications, automotive, consumer electronics, and military applications. The SA20HE3/73 is a popular TVS-diode that is frequently used in such applications as it provides reliable protection for circuits and components from transients and lightning strikes.

The SA20HE3/73 diode is a planar, low capacitance, unidirectional device that is designed to extend the maximum avalanche energy capability of a device. It is based on a voltage overshoot protection principle and has an extended stand-off voltage of 315V. The device has a low clamping voltage of 20V, which makes it suitable for protecting sensitive circuitry such as control logic, microprocessors, memory cells, and other forms of low voltage devices.

The SA20HE3/73 has a clamping voltage of 20V and a current rating of 5A according to its data sheet. It has an ultra low forward voltage of 0.31V and a very fast response time of 1ns for suppressing transients. The device is designed to be mounted to a heat sink in order to dissipate the heat generated during conduction. This helps to extend the life of the diode and ensure reliable protection.

The working principle of the SA20HE3/73 is based on the protection of sensitive components from overvoltage transients. It does this by clamping the voltage to a safe threshold of 20V, which limits the amount of energy it can transfer over a short period of time. When a transient voltage is applied, the device starts to conduct and dissipates the excess energy into its heat sink. This reduces the peak voltage that is present in the circuit and prevents any damage to the components.

The SA20HE3/73 is commonly used in applications that require protection from electrical overstress caused by lightning strikes, electrostatic discharge, and switching transients. Telecommunications and automotive applications typically use TVS-diodes to protect communications systems, ECUs, and other sensitive components from possible electrical surges. In consumer electronics such as laptop and smartphone power circuits, the SA20HE3/73 can be used to provide reliable protection from surge transients.

The SA20HE3/73 is a popular and reliable TVS-diode that is widely used in a variety of applications. It offers optical overvoltage protection and dissipates transients into a heat sink to ensure reliable protection for sensitive components. This makes it an ideal solution for a variety of applications such as telecommunications, automotive, consumer electronics, and military applications.

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