VDRS14T250ALE

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TVS - Varistors, MOVs

There are numerous technologies used to safeguard sensitive electronics from electrostatic discharge (ESD), voltage transient disturbances, and power surges. One of the most successful examples is the VDR S14T250ALE, which is part of a voltage dependent resistor (VDR) family, sometimes referred to as a transient voltage suppressor (TVS).

A driving force for the popularity of VDRs is the concept of voltage clamping, which limits the maximum voltage across a component. This can be monitored and adjusted thanks to a characteristic of the VDRs that ensures the clamping voltage approximates a semi-circle on a voltage-current graph, thus making these devices readily controllable.

So what is the VDR S14T250ALE? This device is a VDR with a rated breakdown voltage of 12V. Its breakdown voltage is the point at which the device begins to conduct current to prevent further emission of power transients. The device also has a peak pulse current of 25A, although depending on the application the pulse will usually be lower than 25A. What makes the S14T250ALE unique is its ability to provide up to 37A for 8ms--making it ideal for industrial systems such as HVAC, motor drive systems, and equipment measuring tools.

The VDR S14T250ALE employs a number of working principles to protect sensitive circuits from electrical feedback. Generally speaking, these principles are (1) Equalization of differential voltages, (2) Limiting voltage transients by sudden outlet of leakage, and (3) Limiting static discharge and indirect junction breakdowns.

The first two principles operate on the principle of letting a certain amount of current flow through the device whenever an unexpected voltage sudden arises, allowing the excessive extra electricity to pass through the device without harming the circuit. This prevents transient voltage transients and shields the circuit from power surges.

The third principle, on the other hand, works by lowering the energy of the static voltage during a discharge event. This prevents junction breakdown, which affects the circuit itself or other circuits connected to it. By limiting static discharge and indirect junction breakdowns, the VDR S14T250ALE ensures the endurance and stability of the circuit.

Considering the aforesaid principles, it is easy to see why the VDR S14T250ALE is an effective tool when it comes to protecting sensitive electronics. The device is capable of handling several different applications including audio and video equipment, industrial process controls, and automation systems. It is also essentially maintenance-free, and its low static capacity allows for sustained low-current operation even when there is a high-current transient.

To further illustrate the multiple applications of the VDR S14T250ALE, we will consider a motion control system. This system is typically used to precisely control and monitor the position of a motor. With its fast-acting ability and reliable clamping features, the S14T250ALE can help to protect the driving electronics within the system from power disturbances, thereby resulting in greater accuracy and long-term stability for the system.

In summary, the VDR S14T250ALE is one of the most widely used TVS devices on the market. This device is reliable and easily adjustable, featuring low capacitance and fast action, and has multiple application fields including audio and video equipment, industrial process controls, and motion control systems. It is an invaluable tool for protecting sensitive electronics from electrostatic discharge (ESD), voltage transient disturbances, and power surges.

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