BY229B-800HE3/81

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	800V
Current - Average Rectified (Io):	8A
Voltage - Forward (Vf) (Max) @ If:	1.85V @ 20A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	145ns
Current - Reverse Leakage @ Vr:	10µA @ 800V
Capacitance @ Vr, F:	--
Mounting Type:	Surface Mount
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Supplier Device Package:	TO-263AB
Operating Temperature - Junction:	-40°C ~ 150°C
Base Part Number:	BY229B-800

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BY229B-800HE3/81 Application Field and Working PrincipleDiodes are one of the most commonly used components in electronic circuits. One type of diode is the single rectifier diode, which is designed to convert AC signals into DC signals. The BY229B-800HE3/81 is a single rectifier diode manufactured by Vishay, and it is used in many different applications. In this article, we will discuss the application fields and working principle behind the BY229B-800HE3/81.The BY229B-800HE3/81 is a fast-recovery rectifier diode, meaning it has a fast recovery time when changing from forward conduction to reverse conduction. This feature makes it suitable for AC/DC converter and motor drive applications, as well as low voltage power supply circuits. It is also typically used as a bridge rectifier in applications such as power supplies and automotive electronics. The BY229B-800HE3/81 can handle high currents up to 4A and voltages up to 800V. Due to its small size and low weight, it is ideal for use in high density circuits. It is also designed to be highly efficient and has a low Forward Voltage Drop (Vf), which is important in high power consumption applications.To understand how the BY229B-800HE3/81 works, it is necessary to understand its basic working principle. In essence, the diode acts like a one-way gate for electricity; it only allows current to flow in one direction. When the anode (positive) side of the diode is forward biased (higher voltage) than the cathode (negative) side, the diode conducts current. Conversely, when the anode voltage is lower than the cathode voltage, the diode does not conduct. This property of allowing current to flow in one direction is known as rectification.The BY229B-800HE3/81 utilizes a fast-recovery method. This means that when the diode is reverse biased, the charge carriers (electrons and holes) are quickly pulled back to their original positions. This allows the voltage across the device to stabilize quickly, resulting in a fast recovery time. In contrast, a slower recovery diode can take longer to respond, resulting in higher power losses.In conclusion, the BY229B-800HE3/81 is a single rectifier diode that can handle high currents and voltages, making it suitable for AC/DC converter, motor drive, bridge rectifier and low voltage power supply applications. It utilizes a fast-recovery method that allows it to quickly respond to changes in voltage and maintain a stable voltage across the device.

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