SMBJ4743/TR13

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The SMBJ4743/TR13 is a single-line unidirectional Zener diode. It is a PN junction diode with a special doping profile that creates a negative voltage drop and allows the diode to be used in a variety of power applications.

The SMBJ4743/TR13 is a surface-mount diode with an epoxy-molded package. Its terminal lead finish is matte-tin, and it has a Peak Pulsed Power Dissipation of 1.25 Watts. The size of the diode is 2.6 mm x 1.5mm, and its typical voltage is 9.1V with a 5% tolerance. It has a maximum reverse leakage current of 1.0 µA and has a forward-voltage drop of 1.2V.

The SMBJ4743/TR13 diode is designed for use in a variety of applications such as overvoltage protection, DC/DC converters, biasing and input protection, and high-speed switching. It is also suitable for automotive, communications, and consumer electronics applications. The reverse recovery time of this diode is very quick, so it can be used to protect against voltage surges and lightning strikes.

The working principle of the SMBJ4743/TR13 is based on the PN junction diode. In a diode, when electrons flow from the N-type to the P-type, they create a potential barrier known as the depletion region. This potential barrier blocks the flow of current in the opposite direction. When a voltage greater than the forward-voltage drop of the diode is applied to the PN junction, the electrons flow in the reverse direction and the depletion region expands. This allows a current to flow in the reverse direction, resulting in a negative voltage drop.

The SMBJ4743/TR13 is an excellent choice for applications that require overvoltage protection or DC/DC converters. It has a robust design, fast recovery time, and is suitable for a variety of operating conditions. The diode is also available in different packaging configurations to suit different applications. It is a reliable, cost-effective solution for protecting sensitive electronics from voltage surges.

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