SMF64AHRQG Circuit Protection

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Transient Voltage Suppressor (TVS) diodes, also known as Transient Voltage Surge Suppressor (TVSS) diodes, are semiconductor devices that are designed to perform robust protection against unexpected over-voltage transients. The SMF64AHRQG is a Cathode-to-Anode Dual Bi-Directional TVS Diode, which is designed to provide Bidirectional protection from voltage transients induced by lightning, inductive load switching and other transient voltage events. These transients can damage system components, decrease the system\'s operational life, and cause system failures.

The SMF64AHRQG’s active circuitry is designed to work with a wider operating voltage range to ensure proper protection regardless of the input supply voltage fluctuations. It also offers low on-state resistance and low capacitance. These factors help to reduce the overall power dissipation during active ESD clamping.

The SMF64AHRQG is specifically designed for use in a variety of automotive, communication, computing, consumer electronics, and industrial applications. Examples of some of its applications include protection of high speed interfaces (e.g. USB2 and USB3, HDMI, Ethernet, fibre-optics, etc.), Data and signal lines in capacitor-coupled circuits, Automatic Control Systems, Thermocouple Protection Circuits, Defibrillators, and Isolated Power Supplies.

The working principle behind the SMF64AHRQG is relatively simple. When a transient voltage is applied to it, the diode is activated and clamps the voltage at or below its rated maximum breakdown voltage. Therefore, the circuit components downstream of the diode are shielded from any potential over-voltage damage. The SMF64AHRQG’s clamping action effectively absorbs the transient energy, resulting in a reduction in the system’s power consumption.

In addition to its transient voltage protection capabilities, the SMF64AHRQG also offers significant performance advantages. These include low Maximum Reverse Leakage Current, High clamping Voltage (6.5V@8A ΔV ESD), High power handling capability (3.2W @ Tj=125°C), and High ESD Clamping Efficiency.

Today’s electronics systems are increasingly becoming vulnerable to transient voltage transients. Although these transient events may not be destructive in nature, they can still degrade system performance and lead to costly and unexpected system failures. The SMF64AHRQG is a versatile bi-directional TVS diode which provides effective protection from these transients, and its robust design makes it the ideal choice for a wide variety of applications.

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