V275LS40BPX2855

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TVS (Transient Voltage Suppressors) devices, Varistors and MOVs (Metal Oxide Varistors) are commonly used in electronic circuits to protect against power transients which can cause component damage and/or degrade circuit performance. The V275LS40BPX2855 device is an example of a TVS – Varistor, MOV and is a 3-terminal, bi-polar device intended for effective transient voltage protection for data and telecom applications.

The V275LS40BPX2855 is designed to protect telecom and data line systems by suppressing normal mode and differential mode transients caused by lightning, impact, switching and other sources. It can be used to protect against a variety of power transients, including SELV (Safety Extra Low Voltage) transients, and will help ensure data integrity. The device can also be used to protect against prolonged high voltages, such as during power problems.

The V275LS40BPX2855 provides the following features: low capacitance, wide frequency response, bi-directional suppression, wide voltage range (10-51V), very low leakage at sustained high voltage, high peak power rating (17.5W @ 10/1000µs waveform). The device also has UL1449 3rd Edition certification.

The working principle of the device is based on its MOV. It acts as an open circuit until the transient voltage reaches its threshold (V_th). At this point, its MOV acts as a low resistance shunt, allowing current to flow between the data and telecom lines.

The accompanying diagram shows the typical application of the V275LS40BPX2855 device. A series inductor (L1 - not shown) is used to filter high frequency peaks prior to the device, while also providing isolation. The V275LS40BPX2855 device is connected between the input and output lines, clamped to the ground. When the transient voltage exceeds the device’s V_th, the device acts as a low resistance shunt, allowing current diverting this energy away from the protected circuit.

The V275LS40BPX2855 is an ideal choice for protecting electronic circuits from power transients, as it provides both efficient and effective protection. Its wide voltage range and high peak power rating make it particularly useful for telecom and data line systems. The device is also UL certified, providing an additional level of assurance that it is safe to use in these applications.

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