UF4003HR1G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	200V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	1V @ 1A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	50ns
Current - Reverse Leakage @ Vr:	5µA @ 200V
Capacitance @ Vr, F:	17pF @ 4V, 1MHz
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-204AL (DO-41)
Operating Temperature - Junction:	-55°C ~ 150°C

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Introduction

UF4003HR1G is a rectifier diode used in many applications due to its unique characteristics and performance. It is a single rectifier, with a very low forward voltage drop, small junction capacitance, and low reverse current. These features make UF4003HR1G ideal for general-purpose rectification applications such as full-wave rectification, power supply switching, surge suppression, and EMI filtering. It is also a robust device that is able to withstand over-current and voltage transients.

Application Field of UF4003HR1G

UF4003HR1G is a versatile device and is used in a wide variety of applications. In power supply systems, UF4003HR1G is commonly used as the main rectifier in full-wave rectification circuits and switching regulators. In ultra-fast circuits, UF4003HR1G is an ideal choice due to its high switching frequency (up to 50MHz) and low turn-on time (2-3ns). It is also useful for power factor correction and surge suppression.UF4003HR1G can also be used in EMI (electromagnetic interference) filtering applications. For example, it can be used to create a differential mode EMI filter to reduce EMI emissions from power lines by attenuating the high frequency components of the signal. Additionally, UF4003HR1G can be used in the ESD (electrostatic discharge) protection circuits, which help protect sensitive devices from high-voltage surges.

Working Principle of UF4003HR1G

UF4003HR1G works by providing a low impedance path for current to pass through. In forward bias, the device acts as a low-voltage-drop diode, allowing current to pass in one direction while blocking current in the opposite direction. In reverse bias, the device has a very low resistance across the junction and is mainly used to protect the underlying circuit from voltage spikes and transients. The low resistance of the device ensures that a large voltage spike is not applied to the underlying circuit, thus protecting it from damage.Together, these two characteristics make UF4003HR1G an ideal choice for general-purpose rectification and EMI filtering applications.

Conclusion

UF4003HR1G is a versatile rectifier diode with many applications. It has a low forward voltage drop, small junction capacitance, and low reverse current, which make it suitable for full-wave rectification, switching regulators, EMI filtering, and surge suppression. It is also a robust device that is able to withstand high current and voltage transients. UF4003HR1G works by providing a low impedance path for current in forward bias, and a low resistance for protection against voltage spikes and transients in reverse bias. The unique characteristics of UF4003HR1G make it an ideal choice for many applications.

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