SMF28A RVG Circuit Protection

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TVS-Diodes, touted as Transient Voltage Suppressors, are two-terminal passive components that protect electronic circuits from overvoltage transients and, when connected right, they can protect against transients due to electrostatic discharge, lightning, and power cross. The SMF28A RVG is a type of TVS-Diode specialized for use in automotive applications. It is typically used to protect battery systems and generator control circuits.

The SMF28A RVG is very effective in suppressing protection due to its large peak surge current rating of 100A, its fast response time of about 10ns, and its low operating voltage of 28V DC. It also has an extremely low on-resistance of 380mohm which makes it very efficient and reduces the voltage drop across the diode. Moreover, the device has a very low leakage current of 15µA which, in turn, ensures that it can remain operational for long-time periods without compromising circuit performance.

The working principle of the SMF28A RVG is based on avalanche breakdown. In the event of an overvoltage or high-energy transient, the device becomes conductive and passes the surge current through its internal structures, which are designed to disperse the energy and protect the connected components. Once the transient has subsided, the device becomes non-conductive and returns to its normal state. The device also features a reverse-biased safety margin of 15V, which helps prevent ESD events, lightning strikes, and power cross transients.

In addition to its high surge current rating and fast response time, the SMF28A RVG is also very reliable and can withstand high temperatures of up to 150 °C. Its small size also makes it ideal for use in automotive applications as it can be easily installed in tight, space-constrained situations. Furthermore, it has RoHs and REACH compliance and is designed to meet various automotive industry standards.

In summary, the SMF28A RVG is a specialized TVS-Diode designed for use in automotive applications. It is capable of withstanding high temperatures, has a fast response time, and features a low operating voltage and an extremely low on-resistance, making it well-suited for the protection of battery systems and generator control circuits. The device works on the principle of avalanche breakdown and has a reverse-biased safety margin which helps prevent ESD events, lightning strikes, and power cross transients.

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