SLD33U-017

TVS - Diodes are incredibly versatile devices, providing a wide range of possible applications from automotive electronics to home entertainment. The SLD33U-017 is one such TVS - diode that is specifically designed to provide protection against lightning-induced voltage transients and electrical overstress in particular applications. In this article, we will be exploring the application field and working principle of the device in more detail.

Application Field

The SLD33U-017 is a three-terminal device that provides protection against lightning-induced voltage transients and electrical overstress. It is designed for use in a wide range of applications, including automotive electronics, industrial electronic equipment, lighting equipment, home entertainment components, and communications equipment. It is ideal for use in applications that require low capacitance, high reliability, and a broad operating temperature range.

The SLD33U-017 is a unidirectional device, meaning it can only protect in one direction – either positive or negative. Which direction it can protect in will depend on the way the device is connected in a particular application. It is best suited for applications with distributed or long ground paths.

The device is capable of supporting a maximum working voltage of 6V and is rated for a maximum peak pulse power of 400W. Its ultra-low capacitance of 0.7pF is also an attractive feature in many applications.

Working Principle

The SLD33U-017 employs a “built-in” crowbar circuit structure to protect a device’s circuitry from both causing and suffering excessive currents. It operates by providing a low impedance path for the surge current to flow through, thus limiting the surge voltage.

When the voltage across the device rises above its breakdown voltage, it begins to conduct. A forward voltage is then created across the device which causes it to act as a shunt circuit and divert current away from the protected circuits.

The surge current is limited by the device’s internal power dissipation capability. The SLD33U-017 has a maximum pulse dissipation of 400W, meaning it can limit currents up to this level. This feature makes the device ideal for high-power applications.

Conclusion

The SLD33U-017 from TVS – Diodes is an incredibly useful device for protecting a wide range of electronics circuitry from both lightning-induced voltages transients and electrical overstress. Its low capacitance, excellent power dissipation capability, and unidirectional operation make it an attractive option for a variety of applications.