MXUPTB5 Circuit Protection

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TVS (Transient Voltage Suppression) diodes are typically used to protect sensitive electronics from sudden, transient events that cause sharp, overvoltage spikes. When these spikes occur, the protective TVS diodes switch on, thereby limiting and absorbing the amount of voltage, and providing protection to the rest of the circuit components.

The MXUPTB5 is an unidirectional silicon avalanche diode designed for transient protection. This type of device is often used in automotive, electronic equipment, and telecommunications applications where voltage spikes can occur and in turn cause damage. It will switch on rapidly and suppress voltage levels of peak levels of up to 4.9kV (within 8/20μs pulse waveform).

The MXUPTB5 is made from solid state silicon material and provides unidirectional, positive-voltage protection from transient overvoltages. It has a voltage clamping of 5V±1.5V, and its breakover and avlanche energy are typcially around 4.1V and 23mJ, respectively. It is rated for a reverse stand-off voltage of 5V, and has a maximum clamping voltage of 14V.

The working principle of the MXUPTB5 is relatively simple. When the voltage across the structure increases to a level where the diode enters an avalanche breakdown condition, the diode rapidly begins to conduct current. This current flows through the device and is shared with the load. This large current flow causes the voltage across the diode to be suppressed, clamping the voltage to a safe level and preventing transient events from causing damage.

For applications that require additional protection, the MXUPTB5 can be used in combination with other circuit components, such as transorb, thyristors, metal oxide varistors, resistors, or capacitors. The combination of components can provide an effective ESD (electrostatic discharge) protection circuit that blocks high voltage transients and provides additional protection to the entire circuit.

The MXUPTB5 is a very reliable and cost effective solution for protecting sensitive electronic components from damaging overvoltage events. Its fast switching speed and wide voltage clamping range make it suitable for a wide variety of applications requiring transient protection. Additionally, this type of diode is very suitable for applications requiring ultra low leakage current and low capacitance for best signal integrity.

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