SE20AFDHM3/6B Datasheet/PDFDiodes - Rectifiers - Single
SE20AFDHM3/6B is an ultra-fast, high efficiency and low forward voltage drop single rectifier. A single rectifier is a type of diode that is used to rectify alternating current (AC) to direct current (DC). It consists of a p-type semiconductor diode connected to an n-type semiconductor diode and is often referred to as a "double diode."
The working principle of the SE20AFDHM3/6B is based on the principle of diffusion of charge carriers in a semiconductor. When a voltage is applied to a semiconductor, the electrons and holes present in the material move to form a depletion region. This creates an electric field and the direction of the electric field is determined by the polarity of the applied voltage. In forward bias, the positive voltage attracts the electrons and the negative voltage attracts the holes, creating a door through which the current can flow.
The SE20AFDHM3/6B offers an ultra-fast switching speed of 75ns and low forward voltage drop of 0.58V @ 1.0A, making it suitable for high frequency circuits. It also has a low power loss, high efficiency and a high surge current capability of 20A. Additionally, it has reverse leakage current of 2μA at 125°C.
The SE20AFDHM3/6B is available in a plastic surface-mount package (SOT-23) which occupies minimum PCB space. This package is suitable for most automated assembly process. The SE20AFDHM3/6B provides bidirectional protection for sensitive components from damage due to transient voltages. It is ideal for applications such as DC-DC converter, switching power supplies and on-board power.
In conclusion, SE20AFDHM3/6B is a fast and efficient single rectifier that provides bidirectional protection against voltage transients. Its high surge current capability and low forward voltage drop make it ideal for high frequency circuits and applications. Additionally, its small SOT-23 package allows for easy integration into most automated assembly process.