3KP40A

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TVS or Transient Voltage Suppressors are devices that serve to protect other devices from high voltage transients or surges, providing electrical isolation in the process. In this article, we will look at the application field and working principle of the 3KP40A TVS diode.

The 3KP40A is a uni-directional TVS diode designed specifically for high voltage transients protection in the range of 25V-400V. It is suitable for use in a variety of applications, including telecommunications, AC/DC converters, military power supplies, and industrial power supplies. The diode is certified to the RoHS standard and rated with an operating temperature range of -55°C to +125°C.

The diode is hermetically sealed in a two-lead ceramic flange package. The package provides excellent electrical insulation for the device and also protects it from adverse environmental conditions. The 3KP40A has excellent surge capability, with a peak pulse power of 4000W and a peak pulse current of 38A.

The working principle of the 3KP40A TVS diode is based on the principle of reverse biased junctions. When the voltage across the diode exceeds its breakdown voltage, the diode becomes conductive and passes current. When the voltage decreases, the diode resumes the non-conductive state and the device is effectively reset.

In addition to providing protection from high voltage transients, the 3KP40A TVS diode also provides electrical isolation between the protected device and the source of the transient. This is accomplished through the use of a series resistor, which maintains the diode in the open circuit state until the voltage across the diode exceeds its breakdown voltage.

The 3KP40A TVS diode is designed for use in a variety of high-voltage applications. Its wide operating temperature range and excellent surge capability makes it an ideal choice for applications in telecommunications, military power supplies, and industrial power supplies. The diode\'s hermetic seal package also provides superior environmental protection, enabling it to handle extreme environmental conditions with ease.

In summary, the 3KP40A TVS diode is a uni-directional diode designed for high voltage transients protection in the range of 25V-400V. Its hermetic package offers superior electrical insulation and environmental protection, making it suitable for use in a variety of applications. The diode\'s working principle is based on the principle of reverse biased junctions and a series resistor, which keeps the diode in the open circuit state until the voltage across the diode exceeds its breakdown voltage.

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