MXPLAD36KP40A

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Transient Voltage Suppression (TVS) diodes, often referred to as suppressor or spark gap diodes, are unidirectional diodes specifically designed to protect sensitive electronic components from high energy surges. It is typically used to protect circuits from lightning, ESD (electrostatic discharge) and other over voltage/power transient conditions. The MXPLAD36KP40A is a popular TVS diode developed by ON Semiconductor and belongs to its High Performance TVS family.

The MXPLAD36KP40A is designed to provide enhanced protection for medium power loads up to 2.6V in wireless 802.11 IT, TV and automotive systems applications. It is an enhanced form of protection as it offers 3.6kW peak power discharge capabilities, exceeding the 0.5kW standard rating other diodes usually offer. This makes it ideal for mission critical applications with higher degrees of surge protection requirements. It has a working forward voltage of 5V and a maximum standoff voltage of 5.75V. The leakage current at 10V and 25°C is less than 1µA.

The working principle of the MXPLAD36KP40A is twofold. Firstly, the diode acts as a clamp, diverting the surge away from the sensitive components of the circuit. The clamping voltage, or turn-on voltage as it is sometimes referred to, will be influenced by the breakdown voltage of the diode which is often around 5.75V. Secondly, the diode absorbs the energy of the surge, preventing it from entering the circuit and damaging the components. When a surge occurs, the diode effectively turns on and begins to dissipate the energy to ground. This process occurs multiple times within the life span of the diode at different levels depending on the severity of the surge.

When choosing a TVS diode for a particular application, critical performance parameters such as peak pulse power, breakdown voltage, capacitance, clamping voltage, response time, surge energy tolerance and voltage protection level all need to be considered. The MXPLAD36KP40A is an excellent choice as it has superior power rating, ultra low leakage current and excellent transient protection capabilities. For these reasons, it is the ideal choice for mission-critical applications that demand the highest levels of surge protection.

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