SP0402U-ELC-01ETG Circuit Protection

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TVS - Diodes is a type of semiconductor device commonly used to protect sensitive electronic equipment from electrical overstress including lightning-induced surge eventsThe SP0402U-ELC-01ETG is one such device that provides protection against high-voltage transients. It is a small-footprint, unidirectional, surface-mount Transient Voltage Suppressor (TVS) diode that has an excellent clamping capability of up to 4kV and breakdown voltage of 18V. These features make it ideal for automated assembly and bidirectional transients applications.

The working principle of the SP0402U-ELC-01ETG is based on breakdown voltage and on the avalanche effect. It consists of two separate layers of PN junctions, connected back-to-back. When an over voltage is applied across the device\'s terminals, it reduces the Reverse Standoff Voltage (RSSV) of the device below the breakdown voltage of the device. When the RSSV falls below the breakdown voltage of the device, it starts to conduct a current. This current, when combined with the triggering current, causes the device to avalanche, providing a high clamping voltage until the transient current decays. This avalanche effect helps to protect sensitive electronics from electrical overstress.

The SP0402U-ELC-01ETG is mainly used in computer peripherals, communication systems, and automotive electronics. In computer peripherals, it is used to provide protection against electrical spikes caused by external sources such as lightning strikes or sudden changes in power. In communication systems, it is used to protect sensitive circuits from high-frequency signals. In automotive electronics, it is commonly used to provide protection against electrical spikes caused by automotive ignitions systems. The device is also widely used in hard-disk drives, printers, security systems, smoke alarms, and medical equipment.

The SP0402U-ELC-01ETG is a thermally enhanced, bidirectional TVS diode with excellent reverse bias protection and surge capability. It is a robust device with an extended operating temperature range of -55°C to 125°C, making it suitable for harsh environment applications. In addition, its small footprint allows for easy mounting on printed circuit boards, allowing for compact designs. The device\'s low stand-off voltage and low maximum leakage current also make it suitable for low-power and low-noise systems.

The SP0402U-ELC-01ETG is a versatile surge protection device due to its excellent clamping capability, protection in both directions, low stand-off voltage, wide operating temperature range, and wide variety of application fields. Its small size, robustness, and efficient transient protection make it an ideal choice for designers seeking to protect sensitive electronics from electrical overstress events.

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