SMF24A-HM3-18

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Transient Voltage Suppressor (TVS) Diode is an electrical component or device which used for clamping and blocking unpleasing levels of voltage. It is most commonly used to protect sensitive devices from electrical transients like lightning, Electrostatic Discharge (ESD) and power surges due to a sudden variation in voltage. It prevents any factor which may cause harm to electrical and electronic components. In this article, we will discuss the application field and working principle of one particular TVS Diode, SMF24A-HM3-18.

Application Field

The SMF24A-HM3-18 is a very versatile device which can be used in various applications. It has a wide operating temperature range from -55°C to 125°C and a high Clamping Voltage (VC) of 24V (6/1000μs) for ESD and Up to 34.9V (8/20μs) for lightning surge. This makes it suitable for use in a variety of general applications such as consumer electronics like mobile phones, appliances, and even medical devices.

It is also suitable for Automotive and Industrial applications such as Automotive Lighting and Entertainment systems, Power Supplies, Industrial Controls and Power Management Systems. This device is very robust and sturdy, which is why it can be used in transportation and transport related electronics.

Working Principle

The working of the SMF24A-HM3-18 is results from a phenomenon called avalanche breakdown. This occurs when electrons gain enough energy from an electric field and begin to move freely across the diode. This generates and multiplies more current in the junction, resulting in a sharp rise in voltage which is called the breakdown voltage. The breakdown voltage is the point at which the device will begin to conduct.

The SMF24A-HM3-18 TVS diode can get fully activated within nanoseconds and will start to clamp the voltage level to a certain threshold. After the voltage exceeds the threshold, the diode will start conducting and a current will flow through it, thus dissipating the excess energy, thus preventing damage to any electronic component.

The device features a very high surge capability of 28.5A (10/1000μs). This high current handling capability of the device makes it ideal for overvoltage protection in all sorts of applications. It has a low breakdown voltage of 7.2V. This feature is very important as it allows the device to detect lower voltage levels and act accordingly.

Conclusion

To summarize, the SMF24A-HM3-18 is one of the most versatile and advanced TVS diodes available in the market today. It has a wide temperature range, high surge capability, and low breakdown voltage which make it ideal for a variety of general and automotive applications. Furthermore, the device is very efficient and fast at responding and dissipating the excess energy from an uncontrolled voltage spike, thus preventing any damage or malfunction to any sensitive components.

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