MXLUPTB8 Circuit Protection

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MXLUPTB8 is a TVS (Transient Voltage Suppression) diode which operates as an unidirectional overvoltage protection device designed for bidirectional ESD (Electro-Static Discharge) protection and other overvoltage events. The product is designed with a protection profile tailored for low capacitive loads, which makes it well suited for protecting sensitive logic interfaces.

The working principle of MXLUPTB8 is as follows: the diode works in accordance with the avalanche breakdown principle, which is the process of forming an avalanche of minority carriers after a voltage is applied above the breakdown voltage of a diode in the reverse direction. When the avalanche breakdown voltage is exceeded, a large amount of electrons or ions are released, resulting in exponential current amplifying phenomena. The product is designed to break down in a tightly controlled manner to minimise stress to the protected circuit, and automatically reset itself afterwards.

In the TVS diode, the breakdown voltage of the p-n junction is set so that a very low current is able to develop through the diode in a forward direction. Under normal conditions, the diode will remain in the low current off-state. However, if a high voltage is applied to the device, in the reverse direction, the breakdown voltage will be exceeded. This will initiate the avalanche breakdown process, resulting in a significant increase in the reverse current of the diode until its limits are reached. When the diode reaches its current limit, it will switch off until the voltage returns to its normal value, afterwards the diode will switch back on.

This product is intended for a variety of general purpose ESD and overvoltage protection applications in consumer electronics and component level protection for peripheral devices. It is suitable for use in the protection of ultra-low capacitive loads, such as logic interfaces, as it is able to resist both positive and negative transients. It is also a suitable choice in industrial applications, as it features a wide operating temperature range.

As the MXLUPTB8 product is designed with a low capacitive load protection profile, it is particularly well suited for protecting sensitive logic interfaces from overvoltage events. The product provides fast transient response times which make it a good choice for applications where response speed is essential. It is a cost effective and reliable solution, and is suitable for use in a variety of different applications.

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