SMF43A-HE3-18

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TVS (transient voltage suppressor) diodes are an essential component in electrical systems, as they are designed to protect sensitive electronics from unexpected voltage spikes and power disturbances. The SMF43A-HE3-18 is a specific diode that belongs in this family of electrical protection devices.

The SMF43A-HE3-18 is a convenient, surface mount device that provides transient protection. It is housed in a quad flat non-leaded (QFN) package and can withstand common voltage transients in microelectronic systems. This component provides 18 volts of peak power to handle the most common, high voltage loads. It has a working current of 43A, making it an ideal choice for high-powered and current-sensitive electronics.

The SMF43A-HE3-18 features an industry-standard ESD module. This special feature is designed to protect high voltage ICs and other components from ESD pulses, helping to prevent damage and malfunction. Furthermore, the SMF43A-HE3-18 is capable of handling an average pulse power of 5600W and can withstand up to 3000 amps of peak current with no evidence of thermal runaway.

In terms of its application field, the SMF43A-HE3-18 is typically used to clamp the induced voltage spikes on a line in order to protect the electronic equipment connected to that line. It has been widely used in protection circuits for high speed data transmissions, medical systems and automotive products. It is also suitable for connecting to personal computers, telephones and other communications systems.

The working principle of the SMF43A-H3-18 is relatively simple. When the transient voltage exceeds the clamping voltage of the diode, it will start to conduct. This conducts the surge current and suppresses the over voltage. The energy of the transient is then dissipated by the diode in the form of heat. The heat is then dissipated through the component\'s thermal path.

As the SMF43A-HE3-18 diode\'s clamping voltage is exceeded, it starts to conduct and adds resistance in the electrical circuit. This resistance helps to reduce the voltage and the current below their pre-transient levels. As an added benefit, the diode will also help to reduce the voltage and current transients for any future events, which makes it ideal for protecting sensitive components that may be affected by voltage spikes.

Overall, the SMF43A-HE3-18 diode is a valuable addition to the range of TVS diodes available. Its high power rating, ESD protection module and ability to handle transient voltage spikes make it a great choice for protecting high voltage electronics in a variety of applications.

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