SMOV25S461NP

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TVS (Transient Voltage Suppressors) are important components for protecting electrical systems from damage caused by transient voltage events. They commonly use semiconductor devices which are designed to help regulate voltage within a system. Varistors, MOVs (Metal Oxide Varistors), and SMOVs (Surge-Type Metal-Oxide Varistors) are all types of TVS devices. In this article, we will focus on SMOV25S461NP, exploring its application and working principle.

The SMOV25S461NP is a special type of MOV designed for use in applications where a high degree of transient voltage protection is needed. It is an 11mm, single-phase, snap-in type varistor rated for 25 kA of surge current. This makes it well-suited for use in general power application, as well as in automotive and industrial applications. Its main features include low capacitance, high surge current rating, excellent transverse performance, and an encapsulated structure.

The SMOV25S461NP operates by absorbing and dissipating transient voltages to protect sensitive circuits from damage. This is accomplished by a series of two diodes and a MOV connected in series between the system power supply and ground. When a transient voltage is detected, the MOV will absorb the excess energy by reducing its resistance. The energy is then dissipated as heat, thereby protecting the system from excessive voltages.

The SMOV25S461NP also features a bidirectional clamping function which limits the peak positive and negative voltage within a system. This is achieved by the MOV responding quickly to transient voltage spikes and shunting them to a ground. This helps to reduce the current and/or voltage levels of the spikes, ensuring that the system remains within its normal operating range.

The SMOV25S461NP is also designed with a double-deck MOV stack which forms an additional clamping function. This stack provides a failsafe by preventing the system from over-voltage protection failure in the event of a single MOV element failure. This is ideal for use in systems where reliable protection is essential, such as automotive, medical, and industrial applications.

The SMOV25S461NP has several benefits. It is a high-capacity, 11mm size MOV, and offers superior clamping capability. It also has a high surge current rating, which allows it to absorb and dissipate maximum voltage and energy which makes it suitable for use with high-power circuits. In addition, its encapsulated construction makes it resistant to environmental and mechanical shocks, making it ideal for robust applications.

Overall, the SMOV25S461NP is an excellent choice for applications where a high degree of transient voltage protection is needed. Its high surge current rating, combined with its double-deck MOV stack, make it excellent for use in automotive, medical, and industrial applications. Its encapsulated construction makes it resistant to environmental and mechanical shocks, making it ideal for use in robust applications. With all of these features, the SMOV25S461NP is well-suited to protect sensitive circuits from damage.

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