P4SMA440A-E3/61

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TVS stands for Transient Voltage Suppressors which are diode based components used for protection against electrical transients such as lightning, electrostatic discharge, and power cross etc. P4SMA440A-E3/61 is a very popular model of TVS devices used widely in a variety of electronics applications. It is an unidirectional component and can suppress voltages ranging from 6 to 440 volts.

Application Field

The P4SMA440A-E3/61 is particularly suitable for the protection of high frequency signals in computer and office equipment, such as USB 3.0 and Ethernet cabling, as well as other telecommunications systems. It can be used in the signal or power lines for protecting data lines and telecom circuitry against the effects of electro-static discharge (ESD), power cross and lightning surges.

In industrial applications, this device can be used in signal and control lines for the same purposes. As these devices provide robust protection up to 440V, they can be used in the protection of heavy equipment such as motors, generators and inverters.

Working Principle

The P4SMA440A-E3/61 is a unidirectional device and it functions by clamping the output voltage within a designed range when an over-voltage occurs. It is ideal for negative voltage protection in systems operating at levels as high as 440V. The device contains three elements: a PN junction diode, a zener diode, and an avalanche diode.

The PN junction diode protects the device from static electrical charges while the Zener diode is a voltage regulating device. The avalanche diode in the device is used to limit voltage surges by providing a low impedance path for current to discharge from the power supply line. The device also includes two small resistors in series for current-limiting purposes. Due to its robust design, P4SMA440A-E3/61 can handle peak current up to 1.2A, making it suitable for a wide range of applications.

The P4SMA440A-E3/61 is operated at low voltages up to 6V and is suitable for protection against ESD, power cross, and power surge conditions. The device can effectively protect sensitive electronics from damage caused by electrical surges. It is also designed to withstand temperatures ranging from -55°C to 150°C, making it suitable for nearly all kinds of applications.

In conclusion, the P4SMA440A-E3/61 is a very versatile and reliable TVS device which has a wide range of applications. It provides robust protection up to 440V against electrical transients such as ESD, power cross, and lightning surge. Furthermore, the device can also withstand temperatures ranging from -55°C to 150°C which makes it suitable for a wide range of applications.

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