CMSD4448 TR Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	75V
Current - Average Rectified (Io):	250mA (DC)
Voltage - Forward (Vf) (Max) @ If:	1V @ 100mA
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	4ns
Current - Reverse Leakage @ Vr:	25nA @ 20V
Capacitance @ Vr, F:	4pF @ 0V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	SC-70, SOT-323
Supplier Device Package:	SOT-323
Operating Temperature - Junction:	-65°C ~ 150°C

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Introduction

CMSD4448TR is a single diode rectifier in a small SC-70 package with a maximum voltage rating of 30V and a maximum current rating of 4A. It is designed for use in applications from low power supplies to high power applications. Its small size and high power density make it well suited for use in applications such as UPS, PCMCIA and audio/video converters.

Application Field

CPSD4448TR is widely used in low power supplies, high power applications, UPS, PCMCIA and audio/video converters. In low power supplies, it\'s fast rectifying action enables it to rapidly convert incoming AC into DC power. It is also ideal for used in high power applications where its small size and high power density make it well suited for use in demanding applications. In UPS systems, it is used to convert incoming DC power into AC for use in the system. In PCMCIA applications, it provides a fast, low noise rectification of current for optimal performance. Finally, in audio/video applications, the rectifier is used to convert incoming AC power into DC for clean, accurate sound and image reproduction.

Working Principle

A diode rectifier converts AC current into DC current by employing the rectifying action of a diode. In the forward bias condition, the diode exhibits a low resistance and allows current to flow through it. In the reverse bias condition, the diode exhibits a high resistance and effectively blocks current flow. In the case of CMSD4448TR, it uses a dual silicon junction rectifier that has two layers that serve as a pair of p-n junctions. When an oscillating voltage is applied to the diode, the two layers will switch between the forward and reverse bias, alternately allowing current to flow and blocking it. This alternating current creates a DC current which is then used in the desired application.

Advantages of CMSD4448TR Compared to Other Diodes

CMSD4448TR offers several advantages compared to other diodes, particularly when used in high power applications. First, its small size and high power density make it well suited for use in demanding applications. This means that the diode is able to provide a greater amount of power with a much smaller overall size. Additionally, this diode is specifically designed for use in low power supplies, high power applications, UPS, PCMCIA and audio/video converters, making it well suited for those types of applications. Finally, as it is an SC-70 package, it is extremely thermally efficient, reducing losses due to heat dissipation and optimizing its overall performance.

Conclusion

CMSD4448TR is an ideal diode rectifier for use in a variety of applications. Its small size and high power density make it well suited for use in demanding applications, while its specifically designed for use in low power supplies, high power applications, UPS, PCMCIA and audio/video converters. In addition, the diode\'s thermally efficient SC-70 package reduces losses due to heat dissipation, resulting in an overall improved efficiency.

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