SMF90A RVG Circuit Protection

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Transient voltage suppressors (TVS) are devices designed to protect a wide range of electronic components and systems from damage due to voltage surges or transients. The SMF90A RVG is a high surge rated unidirectional TVS Diode that can absorb energy up to 32A 8/20usec and is designed to protect I/O interfaces and voltage sensitive components from overvoltage transient damage. It is a cost-effective, low clamping voltage, high surge rated device that is ideal for a variety of automotive, consumer and telecommunications applications.

Application Field

The SMF90A RVG is designed to protect from transients with a peak pulse power of up to 32A 8/20usec. It is ideal for a variety of applications, including automotive, consumer and telecommunications. These applications range from automotive circuit protection such as alternators, starters and power window motors to general consumer applications such as laptop chargers, cell phone chargers and home appliances. It is also used in telecommunications applications for lightning protection.

Working Principle

The SMF90A RVG utilizes a unique avalanche breakdown by a modified Zener structure to protect I/O interfaces and voltage sensitive components from overvoltage transient damage. When the device is exposed to a pulse of voltage greater than its breakdown voltage, a small amount of current will flow through it. This current will cause the device to enter an avalanche breakdown, producing a low voltage drop and low clamping voltage. This low voltage drop and low clamping voltage is an important feature of the device, as it prevents damage to the connected devices from overvoltage transient protection.

When the device is subjected to high transient voltage spikes, it will absorb energy in excess of its avalanche energy rating and withstand significant peak currents without failing. This high-reliability performance makes the SMF90A RVG an ideal choice for device protection. The device also has a high surge rating and a low temperature coefficient, ensuring that it will perform reliably under varying levels of temperature.

The SMF90A RVG offers designers the versatility to choose the most suitable device for their applications while providing ultimate protection against high transient voltage surges. Its low, highly reliable clamping voltage, high surge rating, and low temperature coefficient make the SMF90A RVG an excellent choice for a wide range of protection applications.

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