BY229X-400HE3/45

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	400V
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 @ 400V
Capacitance @ Vr, F:	--
Mounting Type:	Through Hole
Package / Case:	TO-220-2 Full Pack, Isolated Tab
Supplier Device Package:	ITO-220AC
Operating Temperature - Junction:	-40°C ~ 150°C

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Introduction

BY229X-400HE3/45 is a single-phase rectifier, one of the most commonly used diodes in the power electronics field. It is widely applied in industrial, household, and automotive applications. This device is a high efficiency switching diode and features high power, low voltage and minimal losses during forward current operation. This article will discuss the application field and working principle of BY229X-400HE3/45 in detail.

Application

BY229X-400HE3/45 is used in a variety of power electronics applications including power factor correction rectification systems, motor drives, UPS systems, inverters, and rectifiers. It is also suitable for connecting HVAC and other sensitive appliances. Additionally, it can be used as a switch in electronic fuselinks, as well as surge protectors and filters. In addition, it is often used in PFC (power factor correction) circuits and as an inverter diode. This diode can also be used as an anti-transients rectifier by delaying the voltage variation.

Working Principle

BY229X-400HE3/45 is a fast switching diode, which means it can switch the current rapidly when triggered, providing very low forward voltage drop. During normal operation, the diode will operate at a particular voltage drop, which depends on its temperature coefficient. When it reaches a certain temperature, the voltage of the diode will increase and a switching transistor is assembled inside the diode,which increases the switching speed. The current will then become a pulse, varying its width and speed. Additionally, the diode\'s forward voltage drop also increases dramatically at a certain temperature,depending on its overload characteristics.When a reverse bias of up to 1V across the diode is exceeded, the breakdown voltage is exceeded, and the diode will enter a breakdown region. At this point electrons will move from the anode to the cathode, increasing the breakdown current and decreasing the resistance. This can cause a short circuit and, in extreme cases, cause permanent damage to the diode.

Conclusion

In conclusion, BY229X-400HE3/45 is a fast switching diode with a low forward voltage drop and the ability to switch current rapidly when triggered. This diode is ideal for integration power factor correction systems, motor drives, UPS systems, inverters, and rectifiers. It can also be used as an anti-transients diode, and as a surge protector in HVAC and other sensitive appliances. Additionally, when a reverse bias voltage surpasses 1V, it will enter a breakdown region, increasing its breakdown current and decreasing its resistance.

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