3N257-E4/51

Series:	--
Packaging:	Tray
Part Status:	Obsolete
Diode Type:	Single Phase
Technology:	Standard
Voltage - Peak Reverse (Max):	600V
Current - Average Rectified (Io):	2A
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 3.14A
Current - Reverse Leakage @ Vr:	5µA @ 600V
Operating Temperature:	-55°C ~ 165°C (TJ)
Mounting Type:	Through Hole
Package / Case:	4-SIP, KBPM
Supplier Device Package:	KBPM
Base Part Number:	3N257

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Introduction

3N257-E4/51 is a popular semiconductor rectifier diode. It is one of the most commonly used bridge rectifiers, due to its high efficiency, low cost and its wide application field.The 3N257-E4/51 bridge rectifier is a four-terminal, four-diode package which is commonly used as a half-wave or full-wave rectifier. This device can also be used as an isolation barrier due to its reverse voltage blocking capability. It combines two or more single diodes in a single package for the purpose of rectifying alternating current (AC) to direct current (DC). The individual diodes are placed in such a way that the current flows uni-directionally from one end to the other, thus providing DC output.

Working Principle

When an AC current is applied to the bridge rectifier, it is converted to DC. This occurs because of the switching action of the diodes. When an AC voltage is applied, the diodes alternate between forward and reverse biasing. In the forward biasing state, the diode is forward biased and conducts current, allowing charge carriers to flow through the diode, creating a current flow in the diode. When the diode is in the reverse biasing state, the diode reverses its current direction, blocking the flow of current. This is how the bridge rectifier works. The alternating current signals are applied to the two input terminals of the bridge. The diodes then switch between forward and reverse biasing states, which results in a unidirectional current flow and a DC output voltage. The two diodes on one side of the bridge will block the current, while the two diodes on the other side carry the current from one end of the bridge to the other.

Application Fields

Bridge rectifiers have a wide array of applications. They are widely used in power supplies, inverters, converters, switching regulators, and in other applications where a DC voltage is required.3N257-E4/51 bridge rectifiers are mainly used for rectifying alternating current (AC) to provide direct current (DC) power supplies. These rectifiers are also widely used in AC-DC switching converters, as they provide better performance and efficiency as compared to other rectifier devices. Additionally, they can be used to provide an isolation barrier, as they have a reverse voltage blocking capability, preventing the flow of current in the reverse direction.The 3N257-E4/51 bridge rectifier is a cost-effective and reliable solution for AC-DC rectification and isolation. It is widely used in a variety of applications, including home appliances, power supplies, and industrial applications.

Conclusion

The 3N257-E4/51 bridge rectifier is a popular semiconductor rectifier diode. It is a four-terminal, four-diode package which is commonly used as a half-wave or full-wave rectifier. It combines two or more individual diodes in a single package for the purpose of rectifying alternating current (AC) to direct current (DC). Additionally, it can also be used to provide an isolation barrier due to its reverse voltage blocking capability. The 3N257-E4/51 bridge rectifier is mainly used for rectifying alternating current (AC) to provide direct current (DC) power supplies, but it can also be used in a variety of other applications, including AC-DC switching converters, home appliances, and industrial applications.

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