PV275K4032T

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TVS - Varistors, MOVs are typically used for surge protection and from a protection standpoint, these protector devices also can be used to limit the energy dissipation into sub-components such as wire harnesses, motors, and circuit boards. Using TVS - Varistors, MOVs in the right application areas can help prevent electrical noise, absorb a surge or transient, and preserve the life of the equipment.

The PV275K4032T is a 275V Metal Oxide Varistor(MOV). MOVs are voltage dependent nonlinear resistors, functioning with an exponential characteristic over a wide range of voltages. This product is a small, cost-effective, surface mount solution for AC/DC or DC/DC circuit overvoltage protection, with excellent thermal stability and high surge current capacity. It offers excellent protection at very low clamping voltages, making it suitable for many applications that require low voltage protection.

Application Field

The PV275K4032T is ideal for circuit protection of AC/DC and DC/DC components exposed to a wide range of transient overvoltage scenarios. It offers superior performance in industrial and commercial AC/DC power grids, as well as printer, computers, and computer peripherals like USB and HDMI ports. In DC/DC applications, it protects against overvoltage transients, such as in telecommunications, telecom, Ethernet, aerospace, automotive, and military electronics. It is also suitable for data lines, multi-function port applications and audio/video interfaces.

Working Principle

The MOVs consist of a mix of semiconductor and ceramic materials that are ceramic-coated with zinc-oxide particles. When the voltage potential is applied across the MOV, the zinc oxide particles are electrochemically charged, allowing electrons to flow. This current depends on how much voltage is applied. The price and higher surge rating makes it well suited for applications which require long-term protection. The PV275K4032T has a dissipation of 3.75 Watts when mounted on FR4 PCB board.

When the MOV is connected across the load, it starts to conduct current when the applied voltage reaches its point of breakdown. The MOV quickly clamps the voltage and reduces current passing through the device. The device also offers peak pulse current protection, so it can safely absorb surges without sacrificing its performance. Furthermore, it has a high energy absorption capacity, withstanding the energy from the peak transient voltages.

The PV275K4032T is capable of suppressing over voltage transients in both AC and DC applications. It has excellent noise suppression characteristics and can be used to protect circuits against high voltage pulses and spikes. Its wide operating temperature range makes it suitable for use in a variety of environments and its long-term reliability makes it ideal for high-reliability applications. In addition, its high surge current ratings and clamping voltage make it ideal for demanding and high-accuracy applications.

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