SMCJ75CATR

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TVS - Diodes are commonly used in electronic devices for protection against unwanted spikes and surges in the power supply voltage. The SMCJ75CATR is a popular TVS Diode which offers protection against transients in both the positive and negative polarities. In this article, we will discuss the application field and working principle of the SMCJ75CATR.

The SMCJ75CATR is a unidirectional, low capacitance, and bi-directional TVS Diode, which is used for surge or voltage transient protection. It is an SMD device (SURFACE MOUNT DEVICE) with an SMC package which is often soldered directly onto a printed circuit board. It is designed to protect electronic systems from high voltage transients, such as those caused by electrostatic discharge (ESD) and lightning, when connected to AC power (both AC line voltages and DC Line voltages). It is primarily used as an ESD protection device, and it is suitable for use in automotive, computer and consumer electronics applications.

The working principle of the SMCJ75CATR is simple - it works by providing a path for current to be diverted away from the protected device when a voltage surge or transient occurs. When the voltage surge exceeds its breakdown voltage, the diode begins to conduct current in the forward direction, allowing the surge current to be diverted away from the protected circuit. If the voltage surge is of sufficient magnitude, the diode may become permanently damaged. The breakdown voltage of the SMCJ75CATR is rated up to 75V, with a maximum pulse power rating of 8.5 kW. The maximum ESD withstand voltage is rated up to 30 kV.

The SMCJ75CATR can be used in a wide range of applications, such as AC power lines, DC power lines, power supply protection, ESD protection, and ground-fault protection. It is suitable for use in automotive, computer, and consumer electronics applications. It is also suitable for use in industrial equipment, such as PLCs, robotic systems, and other industrial equipment. In addition, it can be used in point-of-sale (POS) systems, medical equipment, and in other sensitive equipment.

In conclusion, the SMCJ75CATR is a popular TVS Diode which offers effective protection against transients in both positive and negative polarities. Its low capacitance, bi-directional operation, and ability to tolerate high levels of surge current make it an ideal choice for many applications. The breakdown voltage is rated up to 75V, and it is suitable for use in AC power lines, DC power lines, power supply protection, ESD protection, and ground-fault protection. It is also suitable for use in automotive, computer, and consumer electronics applications, as well as in industrial and medical equipment.

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