SMBG78AHE3/52

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TVS - Diodes

TVS - Diodes, more formally known as Transient Voltage Suppressor (TVS) devices, are used as overcurrent and overvoltage protection devices. These diodes are designed to protect circuits from being damaged by high voltage transients or surges, such as those occurring during a lightning strike or a power outage. The most common type of TVS diode is the Zener diode, but there are other designs available as well, such as the bidirectional diode, channel device, and the avalanche diode.

The SMBG78AHE3/52 is an example of one of these TVS diodes. It is designed for use in applications that require an overcurrent protection up to 52V. The diode is rated for peak pulse power of up to 1.7kW and a peak pulse current of up to 10A. This device has a reverse standoff voltage of 20V, with a minimumClamping Voltage of 26.3V. It also has a low leakage current of 8µA.

Working Principle

The working principle of the SMBG78AHE3/52 is fairly straightforward. Its purpose is to protect sensitive electronic components from any overvoltage or overcurrent events, such as a power outage or a lightning strike. The diode works by restricting the flow of current to an acceptable level. It is designed to absorb the excess energy present in a higher voltage and then convert it into a more manageable level. This is done by utilizing the reverse standoff voltage, which is the level at which the diode starts to conduct. With a reverse standoff voltage of 20V, the diode will only start to conduct when the voltage exceeds this level.

The diode will then start to conduct the excess energy, resulting in the current being clamped at a certain level. This is known as the clamping voltage and is generally always higher than the reverse standoff voltage. For the SMBG78AHE3/52, the minimum clamping voltage is 26.3V. As mentioned before, the diode also has a low leakage current, which ensures that the current will not persist after the event has ended.

Applications

The SMBG78AHE3/52 is typically used in applications that require overcurrent and overvoltage protection, such as in power supplies, computers, audio/video circuitry, telecommunication equipment, automotive, industrial, and consumer electronics. It is generally used as a single component or as part of a larger circuit, in order to protect sensitive components from damage caused by voltage transients or surges.

Due to its wide range of uses, the SMBG78AHE3/52 is a popular choice for many different types of projects, from small hobbyists to large scale industrial enterprises. Additionally, this type of diode is generally small and lightweight which makes it easy to implement in most applications. Furthermore, it is typically designed to be long-lasting, with the ability to handle up to 1.7kW of peak pulse power and 10A of peak pulse current. As such, the SMBG78AHE3/52 is an effective and efficient solution for any protection requirements.

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