SMAJ350A

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Transient Voltage Suppressors (TVS) used to protect electronic circuits from high voltage transients, such as those arising from electrostatic discharge (ESD) and lightning. Some TVSs have low Watt ratings, allowing them to be used in more sensitive applications. The SMAJ series of bidirectional TVS diodes provides an economical solution to many ESD and surge protection applications. The SMAJ350A is a popular choice in a wide variety of areas and it is important to understand its application field, working principle and characteristics.

The SMAJ350A has a maximum peak pulse power of 600W and a maximum reverse leakage current of 5µA. It is rated to operate at a voltage overvoltage rating of 5.0V with a maximum clamping voltage of 8.5V. It has a low capacitance of 0.30pF and is tested to comply with IEC 61000-4-2 standard. The SMAJ350A is typically used to protect sensitive components from ESD and electric overvoltages in the range of 1.5 to 24V, making it suitable for a variety of applications.

The SMAJ350A is a bidirectional TVS diode, which means that it can absorb transients from either direction. It has a zener breakdown structure which allows it to regulate and stabilize the voltage so that the protected device remains within a safe operating range. The diode works by clamping the voltage below the breakdown voltage, which is typically several volts higher than the designated operating voltage. The breakdown voltage of the diode determines how much voltage it can absorb before it clamps, so it is important to select the right model for the application.

The key characteristics of the SMAJ350A are its fast response time, its low capacitance of 0.30pF, and its peak pulse power rating of 600W. The fast response time allows it to quickly suppress and regulate pulses or surges up to 600W, while the low capacitance minimizes interference between other electronic components. The peak pulse power rating enables the diode to absorb considerable amounts of energy without damage or degradation.

In summary, the SMAJ350A is a popular choice in a wide variety of applications where ESD and electric overvoltage protection are required. It has a fast response time, a low capacitance, and a high peak pulse power rating which make it suitable for these environments. Understanding the application field, working principle and characteristics of the SMAJ350A is essential for proper use and selection.

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