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TVS - Diodes

TVS-diodes, or transient voltage suppressors, are components that are used to protect other electronic components from large surges in voltages. These surges, or transients, can be caused by lightning strikes, power-crosses, or the operation of inductive loads. TVS-diodes can be used to provide power to a variety of electronic components without fear of damage.

The SMBJ28C is a particularly popular type of TVS-diode. It is a silicon diode designed as a transient voltage suppressor specifically for applications with a breakdown voltage up to 28 Volts. It is made up of two closely spaced PN diodes separated by a barrier layer. The two PN diodes act in series to control and reduce the voltage surge before it reaches the component that the TVS-diode is connected to.

The working principle of the SMBJ28C is simple. The two PN diodes act together to divide the voltage surge into two components: one part, which is greater than the breakdown voltage of the diode, passes through the diode, while the other part, which is less than the breakdown voltage, is blocked from passing. This ensures that the breakdown voltage of the device remains intact, and that the component connected to the diode is protected from damage.

The SMBJ28C is especially useful in applications that require protection from high voltage transients, such as automotive, consumer electronics, medical, and military. In addition, it is suitable for use in applications where lightning and transient immunity are required. Due to its low voltage rating, it can also be used in applications where the device must be able to tolerate high ESD impulses without damage.

The SMBJ28C is available in a variety of package styles including SOT-23, SMA, SMB, SMC, SMD, and SOIC packages. It is important to note that the working voltage should be evaluated to ensure that it is compatible with your current application. Additionally, it is important to ensure that the component you are connecting to the TVS-diode is rated for high voltage.

The SMBJ28C is a popular choice for applications requiring protection from high voltage transients. Due to its low voltage rating, it can also be used in applications where the device must be able to tolerate high ESD impulses without damage. The two PN diodes act in series to control and reduce the voltage surge before it reaches the component that the TVS-diode is connected to, ensuring the voltage remains intact and the component connected is not damaged.

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