3N256

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Diode Type:	Single Phase
Technology:	Standard
Voltage - Peak Reverse (Max):	400V
Current - Average Rectified (Io):	2A
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 3.14A
Current - Reverse Leakage @ Vr:	5µA @ 400V
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	4-SIP, KBPM
Supplier Device Package:	KBPM
Base Part Number:	3N256

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Introduction
A 3N256 bridge rectifier is a bridge rectifier with three diodes connected in an alternating arrangement. Bridge rectifiers are one of the most commonly used diode constructions and are employed in many applications which require a simple form of DC power supply. As the name suggests, a bridge rectifier is a semiconductor device which rectifies alternating current (AC) into direct current (DC). In doing so, the AC input voltage is converted into a unipolar voltage. This is done by passing the current through three diodes in such a way that energy is only allowed to flow in one direction and the DC output is therefore of higher quality than the DC output of a rectifier tube.

Applications
Some of the common applications of 3N256 bridge rectifiers are as follows:

• They are widely used to rectify AC voltage to DC voltage in power supplies.
• They are often used in AC to DC converters, such as voltage regulators and AC inverters.
• They can be used in solar power and wind power systems to convert the AC energy to DC for battery charging applications.
• They are commonly featured in high voltage power systems in order to protect the appliances and equipment from AC voltages.
• They are sometimes employed in audio equipment and electronic consumer appliances.
• They are also used in various industrial and automotive applications.
• They are utilized in power-supply related switching circuits.

Working Principle
The working principle of a 3N256 bridge rectifier is based on the concept of AC alternating current and its conversion to direct current. When the AC input voltage is applied at the terminals, the current flows through the connected diodes in such a way that the current always takes the shortest path. In other words, the current is solely able to flow through the diodes which are forward biased and this causes the current to be converted from alternating current to unidirectional current, also referred to as direct current. In addition, due to the fact that the current only flows through one direction, it generates higher output voltage in comparison to a traditional rectifier tube.

Conclusion
The 3N256 bridge rectifier is a widely used and versatile device which is utilized in various industries and applications. Its most common application is the conversion of AC voltage to DC voltage and, along with its superior DC output, it provides high-quality power to various equipment and appliances. The 3N256 bridge rectifier is a cost-effective solution for powering many applications and, due to its reliable performance, is one of the most reliable diode constructions today.

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