DSAI75-18B

Series:	--
Packaging:	Bulk
Part Status:	Active
Diode Type:	Avalanche
Voltage - DC Reverse (Vr) (Max):	1800V
Current - Average Rectified (Io):	110A
Voltage - Forward (Vf) (Max) @ If:	1.17V @ 150A
Speed:	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr:	6mA @ 1800V
Capacitance @ Vr, F:	--
Mounting Type:	Chassis, Stud Mount
Package / Case:	DO-203AB, DO-5, Stud
Supplier Device Package:	DO-203AB
Operating Temperature - Junction:	-40°C ~ 180°C

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DSAI75-18B, Diodes – Rectifiers – Single Application Field and Working Principle

DSAI75-18B diodes, or rectifiers as they are more commonly known, are power semiconductors designed for use in rectification applications. They are designed to convert alternating current (AC) to direct current (DC) for power supplies and dc motor drives. The diodes, which are available in various sizes, offer advantages such as high-current ratings, high reliability, low cost, and miniaturization.The DSAI75-18B has become a popular choice for many rectification applications due to its low on-state power dissipation and low reverse leakage current. This rectifier diode allows greater than 75A continuous current and can handle reverse voltage of up to 18V. On-state power dissipation is reduced to only 0.17W per diode, and reverse leakage current is only 40uA (at 25 degrees Celsius).Rectifier diodes typically consist of a layer of a semiconductor material, such as silicon, surrounded by two contact points, or electrodes. The function of the diode is to allow current to flow in only one direction. DSAI75-18B diodes have an anode and a cathode that must be connected to the appropriate terminals. The anode is always positive and the cathode is negative.The working principle of a rectifier diode is based on the PN (positive-negative) junction. When the anode is connected to the positive terminal, and the cathode is connected to the negative terminal, a low-resistance path is created for the current to flow from the positive terminal to the negative terminal. This process is known as forward-biased conduction. The current that can flow through the diode is dependent on the voltage that is applied to the PN junction.When the voltage applied to the PN junction is reversed, it is known as reverse-biased conduction. A very small reverse current, called the reverse saturation current, can flow through the diode even when it’s reverse-biased. However, the current will be significantly less than that that flows in the forward bias configuration.The DSAI75-18B does not require external cooling or any additional heat sink components for cooling. Most of the dissipation of heat is done internally, making it a reliable and cost-effective diode for high-power applications.In conclusion, the DSAI75-18B is a robust and reliable rectifier diode that is suitable for a variety of applications. With its high-current rating and low reverse leakage current, it is an ideal choice for high current rectification applications. Additionally, its low on-state power dissipation and inexpensive cost make it a popular choice for many rectification applications.

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