SK215AHR3G

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Semikron SK215AHR3G is a single phase, fast recovery (SoR) rectifier diode. The device is rated for an operating junction temperature of up to 150°C and it features an average forward current of 3A and a non-repetitive surge current of up to 10A. This diode is also known as "dual K modul". It is based on two parallel discrete rectifier diodes which are connected in series. In order to increase the surge current capability of the diode, the two discrete rectifiers are thermally coupled, leading to a better heat dissipation. The device also has an integrated overcurrent protection circuit.

The SK215AHR3G is primarily used in low power applications such as low power motor controllers, DC motor drives, and SMPS converters. The diode is highly efficient and can handle high surge currents. The device is designed to operate in applications up to 900V and it features an ultra-low forward voltage drop of only 0.8V. This low forward voltage drop leads to higher efficiency and less power loss. The device is also RFI (radio frequency interference) immune, thus it can be used in sensitive applications where high quality power is needed.

The SK215AHR3G is made of a single composite body with two parallel rectifier diodes. It is insulated and hermetically sealed in a ceramic package. The device utilizes a soft recovery process, which reduces stress on the components. The two rectifiers share the heat generated during the reverse recovery process and this leads to a longer life and higher reliability.

The working principle of the SK215AHR3G is based on two parallel rectifier diodes. During the forward biased condition, the diode allows current to pass and charges the capacitor in one direction. During the reverse biased condition, the diode blocks the current and the capacitor will remain charged and stay in the same voltage state. In this way the charge stored in the capacitor increases or decreases in the same voltage state depending on the direction of the current.

The operating temperature of the SK215AHR3G should not exceed 150°C and the device should be used in applications with a junction temperature no higher than 125°C. When choosing a heat sink for the diode, be sure it is designed to handle the maximum operating temperature and to dissipate the heat generated by the diode. The device should be installed in a clean, dry area and should be securely fastened so that it will not be exposed to vibration.

In summary, the SK215AHR3G is a fast recovery single phase rectifier diode with a high surge current capability and a low forward voltage drop. It is primarily used in low power applications such as motor controllers and SMPS converters. The device is highly efficient and RFI immune, thus it can be used in sensitive applications where high quality power is needed. The diode has two parallel rectifier diodes and a soft recovery process and it should be installed securely in a clean and dry place.

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