SMC5K40A-M3/H

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TVS - Diodes (transient voltage suppressors) are semiconductor devices used to protect electrical environments from transient voltage events. The SMC5K40A-M3/H is one of the most common devices used for this purpose. It is designed to protect both low-power digital and analog circuits, as well as high-voltage power supplies, from damaging over-voltages.

The SMC5K40A-M3/H utilizes a unique combination of technology, design performance, and protection characteristics in order to effectively protect sensitive electronic equipment from transients caused by electrical disturbances such as lightning and electrostatic discharge.

The SMC5K40A-M3/H features a dual unidirectional voltage divider circuit with a built in Zener diode that can provide a reverse breakdown voltage as high as 40V. This makes the device suitable for a variety of applications, including power supplies, telecommunications, and automotive electronics. The device is also designed to protect power circuits from transients with peak pulse energy of 40kV.

The working principle of the SMC5K40A-M3/H is fairly simple. The device consists of two components: a Zener diode and a reverse biased transistor. When a transient voltage arises, the Zener diode will break down and the transistor will enter active conduction mode. This causes a current limiting action to occur, which drastically reduces the peak transient voltage, thereby protecting the circuit from damage.

The SMC5K40A-M3/H is typically used in applications where transients may occur, such as in industrial and automotive applications. The device can also be used in various other applications, including power supplies, fuel cell systems, and computers. The device is available in a variety of packages, including surface mount, through hole, and radial leaded formats.

The SMC5K40A-M3/H is a very effective device for protecting sensitive electrical components from damaging transients. Its combination of features, such as its dual unidirectional voltage divider circuit and its ability to provide a reverse breakdown voltage as high as 40V, make it ideal for a wide variety of applications. Its simple working principle, coupled with its high level of protection, make it a great choice for protecting any type of electronic circuitry from damaging over-voltage transients.

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