V39ZA1PX2855

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TVS - Varistors, MOVs, are a type of semiconductor surge protector typically used for protection of power ports. The V39ZA1PX2855 is a designed for overvoltage suppression and ESD protection. It offers excellent ESD protection, surge protection, and low capacitance for ESD and surge protection.

Applications of the V39ZA1PX2855 include protecting input signals, such as USB ports, and line ESD/surge protection for electronic equipment such as photocopiers, fax machines, and scanners. It is also used in various communication ports such as Modem/Ethernet ports, home networks and cable TV. Other applications can include general audio applications, radio frequency (RF), and power circuit protection.

The V39ZA1PX2855 is a low-cost, high-voltage varistor that offers excellent ESD and surge protection. It is designed to absorb transient energy to protect electronic equipment from overvoltage and ESD. The device includes two metal oxide varistor (MOV) junction diodes connected in series with a metal oxide varistor acting as a zener clamp on the output. The MOVs are designed to absorb transient energy and limit the surge voltage level.

The working principle of the V39ZA1PX2855 varistor is based on the principle of a diode. When excessive voltage is applied, a large electric current flows from the anode to the cathode, which causes a voltage drop across the diode junction. The current is limited by the reverse breakdown voltage of the diode. The voltage drop depends on the series resistance, which is determined by the size of the varistor chip. The design also includes a metal oxide varistor acting as a zener clamp on the output. This provides additional protection by limiting the voltage drop produced by the diode.

The V39ZA1PX2855 has a transient surge rating of 75 volts and a surge current rating of 140A. It has an operating temperature range of -55°C to +125°C and a storage temperature range of -55°C to +150°C. The device is available in a SOT-23 package and is compatible with lead-free soldering. Additionally, the device has a built-in EMI filter that helps reduce conducted EMI emissions.

In conclusion, the V39ZA1PX2855 is a low-cost, high-voltage varistor that offers excellent ESD and surge protection. It is designed to protect input signals, line ESD/surge protection, and other applications such as audio applications, RF, and power circuit protection. The device includes two metal oxide varistor (MOV) junction diodes connected in series with a metal oxide varistor acting as a zener clamp on the output to limit the voltage drop produced by the diode.

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