SMCJ45CA-QH

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TVS (Transient Voltage Suppressors) diodes provide a safe yet efficient way to protect sensitive electrical components from injury due to voltage spikes and surge currents. SMCJ45CA-QH is a surface mount silicon rectifier diode which is designed as transient voltage suppressor for protection of the data line interfaces. It can be used across a wide variety of applications, from automotive and industrial to consumer appliances.

The SMCJ45CA-QH offers a variety of features, including low breakdown voltage (45 V ±20%), small package size (SMCJ) for space saving design, and an ultra-fast response time of 2ps. With its low capacitance, the diodes are ideal for protecting high speed data lines.

The SMCJ45CA-QH can be used in a wide range of applications, from AC/DC converters, DC/DC converters, Li-Ion battery chargers, power over Ethernet applications, and uninterruptible power supplies (UPSs). It can also be used in industrial and automotive applications, such as automotive electronics, motor controllers, and AC motor drives.

When used in data line applications, the SMCJ45CA-QH works to protect the data lines against overvoltage events such as lightning strikes or power surges. When the voltage on the data lines surpasses the specified breakdown voltage of the diodes, the diodes rapidly reduce the voltage to a safe level. This prevents damage to the components and ensures reliable operation.

The working principle of the SMCJ45CA-QH is based on its reverse blocking characteristics. When the voltage on the data line surpasses the breakdown voltage of the diode, it starts conducting by sacrificing its own junction and diverting the increased current away from the component. This diverts the component from the overvoltage event and prevents it from being damaged.

The SMCJ45CA-QH is also equipped with a built-in fuse that provides protection for the diode and its components against overcurrent events. The fuse opens when the current exceeds a specified limit, thereby preventing further damage to the components.

Overall, the SMCJ45CA-QH is a versatile diode ideal for TVS applications. It offers low breakdown voltage, small package size, and an ultra-fast response time, making it a great choice for protecting sensitive data lines. Thanks to its reverse blocking characteristics and built-in fuse, the diode can also provide protection against overvoltage and overcurrent events.

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