SA51HE3/73

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TVS diodes or transient voltage suppression diodes are designed to protect electronic components from damages caused by voltage spikes. The SA51HE3/73 is a unidirectional, pN diode fabricated in an 8-pin P package with a low profile of 9.5 mm. This component is designed to protect electronic devices from transients that occur on the corresponding output port or lines.

The SA51HE3/73 device features a semiconductor junction and a NTC resistor connected in series, allowing it to absorb pulses quickly and safely. Built with a low profile and a compact size, it has a breakdown voltage from 5 to 13V and can peak pulse power up to 30W. As it is a low-power device, the forward current is also limited, making it suitable for applications with low power.

The SA51HE3/73 is typically used in automotive, industrial, and commercial electronic systems. It can be used to protect various complex and sensitive devices from root-touch conditions, such as Ethernet, USB, and lightning cable connections. It is also suitable for protecting ICs, components, circuits, and other electrical products from transient electrical disturbances. The SA51HE3/73 provides an excellent protection and a high degree of stability.

The SA51HE3/73 device has a low dynamic resistance of only 0.1 Ohms, allowing it to quickly absorb electrical disturbances. Its fast response time is also highly appreciated, as it can protect products and components from sudden voltage changes and power surges, even without prior detection. It also has a current limiting feature, making it ideal for applications that have a low power rating but still require voltage protection.

The working principle of the SA51HE3/73 is based on the fact that transients tend to travel from one port to another and eventually reach the output section of a circuit. The device is designed to provide a low resistance path which will divert most of the transient energy away from the output device, thus providing protection. The NTC resistor present in the device helps to limit the voltage peak and current spikes. When exposed to an overvoltage, the diode will activate and shunt the excess current, protecting the output device from damage.

The SA51HE3/73 device is particularly suitable for portable electronics such as mobile phones, laptops, and tablets. It can also be used in a variety of other applications such as automotive, industrial automation, medical, telecommunication and consumer electronics. The device is widely available in a variety of packages and is highly rated for its performance and reliability.

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