DSAI35-18A

Series:	--
Packaging:	Bulk
Part Status:	Active
Diode Type:	Avalanche
Voltage - DC Reverse (Vr) (Max):	1800V
Current - Average Rectified (Io):	49A
Voltage - Forward (Vf) (Max) @ If:	1.55V @ 150A
Speed:	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr:	4mA @ 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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Introduction

DSAI35-18A is a rectifier diode featuring a single junction, meaning it is capable of rectifying an alternating current to a unipolar output. This type of diode can be used in a variety of applications, including but not limited to: dimming of low-voltage incandescent lights, providing radio-frequency protection in pulse-forming networks, and in power supplies to reduce the number of rectifiers needed.

Working Principle

In a DSAI35-18A diode, electricity must flow through the junction for current to be conducted. When the negative electrode is connected to the anode, electrons are "pushed" from the negative electrode to the anode junction. This creates a surge of electrons that allows current to flow through the diode. Similarly, when the positive electrode is connected to the anode, a surge of electrons is sent from the positive electrode to the anode junction, creating an opposite effect to the former. This allows current to flow in the opposite direction. This feature makes the DSAI35-18A diode capable of rectifying an Alternating Current (AC) into Direct Current (DC) for use in various applications.

Capabilities and Limitations

The DSAI35-18A diode is capable of withstanding high reverse voltages, up to 200 Volts. Additionally, it can handle forward surge currents up to 3 Amps. These features make the DSAI35-18A diode suitable for use in high power applications.However, its capability comes with certain limitations. The DSAI35-18A diode should not be used in applications which require a current over 3 Amps or a voltage over 200 Volts. Furthermore, it should not be used in applications which require high frequency operation, as it is only designed to be used with 50/60 Hz AC signals.

Applications

The DSAI35-18A diode can be used in a wide range of applications due to its rectifying capabilities, allowing it to be used in AC-DC converters, low-voltage dimming applications, and pulse-forming networks, among others.The most common application for the DSAI35-18A is in power supplies, where the diode is used to convert the AC input into a DC output. This can be used in both isolated and non-isolated power supplies, as it can be used with both AC and DC circuits. The DSAI35-18A can also be used in low-voltage dimming circuits, as it is capable of handling higher forward surge currents than standard rectifier diodes. This makes it an ideal choice for dimmer switches, as these tend to require high surge currents.Finally, the DSAI35-18A can be used in pulse-forming networks, such as in radio frequency (RF) protection circuits. These circuits use the diode to provide protection against RF signals, allowing a more reliable operation of the circuit.

Conclusion

The DSAI35-18A is a rectifier diode which can be used in a variety of applications that require rectifying an Alternating Current (AC) into Direct Current (DC). This type of diode is capable of withstanding high reverse voltages and forward surge currents, making it an ideal choice for use in power supplies, low-voltage dimming circuits, and pulse-forming networks.

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