UF8BT-E3/4W

Series:	--
Packaging:	Tube
Part Status:	Last Time Buy
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	100V
Current - Average Rectified (Io):	8A
Voltage - Forward (Vf) (Max) @ If:	1.02V @ 8A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	20ns
Current - Reverse Leakage @ Vr:	10µA @ 100V
Capacitance @ Vr, F:	--
Mounting Type:	Through Hole
Package / Case:	TO-220-2 Full Pack, Isolated Tab
Supplier Device Package:	ITO-220AC
Operating Temperature - Junction:	-55°C ~ 150°C

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Diodes form the basis of many electronic circuits. Diodes are essential in modern technology as they provide a way to convert alternating current (AC) into direct current (DC). Rectifiers are an important type of diode, used to convert AC power into pulsed DC power. Single rectifiers are the simplest type of diode, typically consisting of a single PN junction diode. A single rectifier is specifically designed to conduct current in one direction, while blocking any current creeping in the opposite direction. This enables single rectifiers to convert alternating current into unidirectional pulsed direct current, thus forming the basis of many power conversion circuits.In this article, we examine the application field and the working principle of a particular single rectifier, the UF8BT-E3/4W.

Application Field

The UF8BT-E3/4W is an 800V, 4A single rectifier diode designed for power conversion applications in power supplies, UPS systems, solar inverters, automotive and industrial applications. It is designed to have a high forward current capability and low power loss. The UF8BT-E3/4W has a ceramic body and an integrated heat sink, which makes it ideal for use in high temperature environments.

Working Principle

The UF8BT-E3/4W is a single diode rectifier device. It consists of one PN junction diode, connected to a wire that is connected to the positive DC voltage supply. The diode is also connected to a wire that is connected to the negative DC voltage supply. When a positive DC voltage is applied across the diode, the current flows from the positive to the negative DC voltage supply. This is known as forward conduction, or forward bias in a PN junction. The reverse current is blocked, as no current flows from the negative to the positive DC voltage supply, this is known as reverse bias of a PN junction.The blocking voltage of the UF8BT-E3/4W is 800 volts, meaning it can withstand a large reverse voltage and still remain in the forward conduction state. The maximum forward current capability is 4A, with a power dissipation of 40W. The maximum reverse leakage current is 1mA with a forward recovery time of 30ns. The maximum junction temperature rating of the device is 150°C. The UF8BT-E3/4W employs an integrated heat sink design, which not only provides improved thermal conductivity, but also provides higher junction temperature rating up to 150°C. This is beneficial in applications where high temperature operations are required.

Conclusion

The UF8BT-E3/4W is a 800V, 4A single rectifier diode designed for power conversion applications. It consists of one PN junction diode, connected to a positive and negative DC voltage supply. The device is equipped with an integrated heat sink, allowing it to withstand a large reverse voltage and operate in high temperature environments. Its maximum forward current is 4A and has a power dissipation of 40W. This device is suitable for use in power supplies, UPS systems, solar inverters, automotive and industrial applications.

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