MX15KP78A

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Transient Voltage Suppressor (TVS) diodes are an important component of any electrical system, especially those operating in areas with potential voltage surges. The MX15KP78A is a TVS diode designed specifically to protect high-power current circuits against over-voltage transients. This article will discuss the application area and working principle of the MX15KP78A.

The MX15KP78A is designed for protecting high-capacity current circuits from over-voltage transients, such as those generated by inductive switching. This protection can be provided at an operating voltage up to 15kV and with a peak pulse current rating of up to 78A. It can also be used to protect circuits against reverse voltage transients, which can occur due to power supply polarity reversal and other external disturbances. This protection can be provided at an operating voltage up to 5kV and with a peak pulse current rating of up to 1A.

The MX15KP78A is available in two different packages, including a “Surface Mount” (SMT) and a “Through Hole” (TH) version. The SMT version is designed to be mounted directly onto a printed circuit board, providing more efficient board-level packaging. The TH version is designed to be used with a bolt-on wire terminal, allowing it to be more easily connected to outside components. The MX15KP78A is also available in a variety of surge characteristics to meet the needs of any application.

The working principle of the MX15KP78A is based on the breakdown of the avalanche phenomenon, which is an effect caused by the impact of high-speed electrons on an elemental medium. When current is applied to the diode in the forward direction, the constant avalanche effect increases the conductivity of the elemental medium and thus the electrical breakdown occurs. This breakdown in the diode produces an open circuit, which shuts off the initial surge current and prevents further voltage rises. When the initial surge current dissipates, the open circuit will close, and the diode will again allow current to flow.

In summation, the MX15KP78A is a transient voltage suppressor (TVS) diode designed for protecting high-power current circuits against over-voltage transients. It is available as either a “Surface Mount” (SMT) or “Through Hole” (TH) version with a peak pulse current rating of up to 78A for high-capacity protection, and an operating voltage up to 5kV for reverse voltage protection. This diode utilizes the breakdown of the avalanche effect to produce an open circuit, which shuts off the initial surge current and prevents further voltage rises. Thus, the MX15KP78A is an ideal solution for applications in industries where high-power current circuits must be protected from over-voltage transients.

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