AR4PKHM3/87A

Series:	eSMP®
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Diode Type:	Avalanche
Voltage - DC Reverse (Vr) (Max):	800V
Current - Average Rectified (Io):	1.8A (DC)
Voltage - Forward (Vf) (Max) @ If:	1.9V @ 4A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	120ns
Current - Reverse Leakage @ Vr:	10µA @ 800V
Capacitance @ Vr, F:	55pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	TO-277, 3-PowerDFN
Supplier Device Package:	TO-277A (SMPC)
Operating Temperature - Junction:	-55°C ~ 175°C
Base Part Number:	AR4PK

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Diodes - Rectifiers - Single - AR4PKHM3/87A Application Field and Working Principle

The AR4PKHM3/87A is a type of single, fast recovery rectifier diode, which is suitable for applications in commercial and industrial variable speed drives, solar inverters, UPS systems, switch mode power supplies, and more. As a high powered diode, it offers high surge capability, minimal power losses and device temperature variation, and reliable operation even in the most demanding environments. In this article, we will discuss the typical applications of the AR4PKHM3/87A, as well as its working principle.

Applications

The AR4PKHM3/87A can be used in a variety of power applications. It is ideal for use in commercial and industrial variable speed drives, solar inverters, and UPS systems for start-up and run requirements. This fast recovery diode is also suitable for use in switching power supplies, DC/DC converters, and harsh environment conditions.Because of its power and voltage capabilities, the AR4PKHM3/87A is a great choice for use in high switching frequencies, high harmonic content, and tuned power supply systems. To maximize its performance in these types of applications, it is important to ensure a good thermal performance with accompanying heat sinks to further draw away heat from the device.

Working Principle

The AR4PKHM3/87A single rectifier diode works on the principle of reverse-biased p-n junctions. A p-n junction is a type of semiconductor junction that consists of a layer of p-type material and n-type material, which are placed together in such a way that the electrons from the n-type material can travel across to the material layer of the p-type material.When an external voltage is applied to the diode, it produces a forward-biased current, which allows a small current to flow through the diode elements. This current enables the diode to act as a rectifier, regulating the current flow in one direction.In the reverse bias condition, the current through the diode is limited by the highest possible voltage that can be applied in the reverse direction. The AR4PKHM3/87A is a fast recovery rectifier, meaning it can recover quickly from the reverse bias condition and switch back to its off state when the external voltage is removed.

Conclusion

The AR4PKHM3/87A is a single fast recovery rectifier diode, which is suitable for a variety of power applications. It offers high surge capability, minimal power losses, and reliable operation in high switching frequencies, high harmonic content, and tuned power supply systems. The working principle of the device lies in the p-n junction, which allows for a forward-biased current to flow and for the diode to act as a rectifier.

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