MXLUPTB28E3 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are usually used to provide protection against lightning strikes, electrostatic discharges, or other high voltage surges. The data sheet of the MXLUPTB28E3 states that it is a 600 W 8.7/20 s unidirectional unidirectional SP51TVS diode, which provides efficient overvoltage protection for power supply lines. Let’s discuss in detail the application field and working principle of MXLUPTB28E3.

MXLUPTB28E3 is used mainly in applications where compact overvoltage protection is needed. Examples include surge suppressors, TVSS modules, I/O port protection, and in various types of power supply line protection, such as AC-DC and DC-DC converters. Additionally, it can be used in high voltage applications such as motor control, motor drives, and HMI applications. Depending on the application, the diode can be used in either single line or parallel configuration.

When it comes to the working principle, the way the diode works is quite straightforward. It is essentially two rectifying diodes connected in antiparallel. When the applied voltage is below the voltage breakdown of the diode, the diode resembles an open circuit and no current can flow through it. However, when the voltage rises above the breakdown voltage, the diode conducts, quickly reducing the voltage on the protected line.

The most important parameters that manufacturers take into account when choosing the right diode are its voltage breakdown, peak power dissipation and maximum clamping voltage. The voltage breakdown is the voltage at which the diode begins to conduct, and the maximum clamping voltage is the maximum voltage that the diode can clamp without failing. Peak power dissipation, on the other hand, is the maximum power the diode can safely dissipate. The voltage breakdown of MXLUPTB28E3 is 8.7 V, the peak power dissipation is 600 W and the maximum clamping voltage is 20 V.

In conclusion, MXLUPTB28E3 is a compact and efficient diode which provides effective protection against transient voltage. It is suitable for applications where the voltage breakdown is 8.7 V, the peak power dissipation is 600 W, and the maximum clamping voltage is 20 V. It is mainly used in surge suppressors, TVSS modules, I/O port protection, and other types of power supply line protection.

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