SESD1004Q4UG-0030-088 Circuit Protection

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TVS diode, also known as transient voltage suppression (TVS) diode, is a type of semiconductor diode that is able to absorb voltage spikes often encountered in electric circuits. The SESD1004Q4UG-0030-088, is an uni-directional TVS diode designed to protect sensitive electronic equipment from voltage transients induced by lighting, static discharge and inductive loads. It is mainly applied in automotive applications.This TVS diode provides ESD and lightning protection for up to 25A line conditioners and is rated at 8V with a minimum clamping voltage of 20V. It has a low capacitance of 110pF, is packaged in an extended SMA surface mount package and has an operating temperature range of -55°C to +125°C.When the SESD1004Q4UG-0030-088 is exposed to a sustained voltage lower than its rated value, it stays completely non-conductive. However, when subjected to transient over-voltages, it becomes conductive and soon reduces the voltage to safe levels.In principle, the operation of TVS diodes is based on avalanche breakdown. When the diode is exposed to an overvoltage, the electric field generated in the diode is so strong that the diode begins to conduct electricity. As the charge piles up in the diode, it very quickly reduces the voltage to a safe level.The SESD1004Q4UG-0030-088 has a clamping voltage of 20V and a breakdown voltage of 8V, which means it is capable of reducing transient voltages above 8V to a safe level within 10 nanoseconds. The device has an excellent surge capability and is capable of handling multiple ESD discharges.The SESD1004Q4UG-0030-088 is an effective protection solution for automotive applications and can also be used in a variety of other industrial and consumer applications. Its features make it a great choice for applications that require fast response times and high surge protection. It is suitable for high voltage and high power applications, as well as applications with high-frequency switching noise.In conclusion, the SESD1004Q4UG-0030-088 is a uni-directional TVS diode designed for voltage transient protection in automotive applications. It has a low capacitance of 110pF, an operating temperature range of -55°C to +125°C, and a breakdown voltage of 8V with a minimum clamping voltage of 20V. It provides fast response times and high surge protection, making it suitable for a variety of industrial and consumer applications.

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