SMBJ48ATR

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TVS are a class of devices that are designed to protect electronic systems against transients. Unlike Zener diodes, they are specifically designed to absorb transient voltage, rather than acting as a simple clamp circuit. These devices are becoming increasingly popular in industrial and automotive applications, where environmental and component stress can cause excessive voltage transients. The SMBJ48ATR is a transient voltage suppression device designed to protect against transients in both a reverse, and forward bi-directional form.

The SMBJ48ATR has many advantages over other types of protection devices, which include an extremely fast response time, and the ability to withstand higher current transients without damage. This device is also able to withstand higher surge currents than traditional TVS diodes. The breakdown voltage of this device is also relatively high, which is an important factor when choosing a protection device.

This device is also able to protect against two different levels of voltage transients, the first being its stand-alone voltage rating of 400 Volts (V). This is the peak voltage that the device will be able to clamp without being damaged. The second value is the breakdown voltage of the device, which is typically around 600V. This is the level at which the device will be able to absorb any incident energy generated by the transient voltage surge.

The working principle of the SMBJ48ATR is relatively simple. When a transient voltage surge occurs, the device is able to absorb the energy created by the surge, thus preventing it from entering the system. This occurs through the various electrical properties of the device. Firstly, the PN junction of the device is able to act like a capacitor with the junction being able to store charge. This is then released into the system which allows it to absorb the energy generated by the transient voltage surge. Secondly, the structure of the device itself acts as an inductor with the current flowing through the device causing an opposing magnetic field to be generated. This magnetic field then works to reduce the amplitude of the surge before it reaches the system.

The SMBJ48ATR is an efficient and highly reliable device for protecting systems from transient voltage surges. Its fast response time, high breakdown voltage, and ability to withstand higher current transients make it an ideal solution for industrial and automotive applications. By understanding the working principle and application field of the SMBJ48ATR, it is possible to select the right device for the desired protection level required.

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