SM8S40ATHE3/I Circuit Protection

TVS - Diodes

SM8S40ATHE3/I is an advanced type of TVS diode that offers superior performance in a range of applications. TVS diode, or transient voltage suppression diode, is a type of semiconductor diode that is designed to protect electrical components and circuitry from transient voltage surges and ESD (electrostatic discharge) events. TVS diodes are used in a variety of applications, including automotive, communications, consumer electronics, and industrial.

The SM8S40ATHE3/I diode is a unidirectional device that can be used for various protection schemes, including clamps, crowbars, and latching circuits. It is capable of protecting a variety of applications by protecting against both overvoltage and ESD events. The device is rated for a peak pulse power of 500W with a peak pulse voltage of 400V. The device also offers low leakage and fast switching times.

Working Principle

TVS diodes such as the SM8S40ATHE3/I operate on the principle of avalanche breakdown. When the device is exposed to an applied voltage that exceeds the junction breakdown voltage of the diode, an avalanche of electrons is created. This avalanche of electrons results in a decrease in the device’s forward voltage. As a result, the device can limit, clamp, or divert the excess voltage. This is known as voltage clamping.

The SM8S40ATHE3/I device features a low on-state voltage and low standing power consumption. This makes it an ideal choice for various applications, as it requires little energy while providing an effective protection. The device is also designed to tolerate large ESD currents, making it suitable for high-speed applications.

Applications

The SM8S40ATHE3/I device is a versatile device with a variety of applications. It is commonly used for protecting voltage sensitive devices from overvoltage and ESD events in applications such as automotive, communications, consumer electronics, and industrial. It is suited for various types of voltage clamps, crowbars, and latching circuits. It can also be used as an ESD protection element in high speed systems such as USB and HDMI.

The SM8S40ATHE3/I diode is capable of withstanding large surge currents and offers protection against overvoltage spikes. Due to its low leakage current and fast switching times, it is suitable for use in applications that are exposed to extreme conditions or require precise timing. The device is also available in an RoHS compliant package, making it suitable for use in environmentally conscious applications.