SMLJ90A

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TVS-Diodes are components that protect circuits against overvoltage, while also allowing them to operate as normal when the situation is reversed. The SMLJ90A is one such component, and it can have multiple uses. This article will look at the application fields and working principles of the SMLJ90A.

The SMLJ90A is most commonly used in telecom installations to protect circuits from voltage spikes. It acts as a "clamp" of sorts, preventing sudden increases or decreases in voltage from damaging the protected circuits. It operates as an electronic valve, allowing AC current to pass until a certain voltage is exceeded. At this point, the SMLJ90A will activate and start to clamp the excess voltage. This occurs in both the positive and negative polarities, as the device is equally effective regardless of the polarity of the excess voltage.

In addition to telecom installations, the SMLJ90A can also be used to protect other circuits such as automotive components and heavy machinery. This device can be used in any situation where sudden fluctuations in voltage could cause damage. Unlike other TVS diodes, the SMLJ90A is capable of handling significant power and voltage levels without any damage.

The SMLJ90A is designed in such a way that it can activate at predetermined voltage levels. This is possible due to its internal components, which allow the device to detect when it needs to activate. These internal components include a zener diode, a resistor, and a transistor which can detect the voltage levels and then activate the device. When the SMLJ90A is activated, the transistor will limit the amount of current that is allowed to pass through while the zener diode and resistor will restrict the flow of electricity.

These components combined allow the SMLJ90A to offer a wide range of protection from overvoltage. This protection can be further enhanced by the addition of additional components, such as surge protectors. These components can help to provide an extra layer of protection, and allow the SMLJ90A to protect against even more extreme conditions.

Overall, the SMLJ90A is a highly effective device that can be used to protect sensitive circuits from overvoltage. Its ability to detect predetermined voltage levels and activate its components makes it the perfect choice for applications such as telecom and automotive. Its effective protection and internal components make it a must-have device for any circuit protection application.

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