SK38A-TP Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	80V
Current - Average Rectified (Io):	3A
Voltage - Forward (Vf) (Max) @ If:	850mV @ 3A
Speed:	Fast Recovery = 200mA (Io)
Current - Reverse Leakage @ Vr:	500µA @ 80V
Capacitance @ Vr, F:	250pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (HSMA)
Operating Temperature - Junction:	-50°C ~ 125°C
Base Part Number:	SK38

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Introduction

The SK38A-TP is a precision current source rectifier that is widely used in some applications due to its excellent performance characteristics. This device has a variety of applications and works in a wide range of operational ranges. This article is written to explain the application field and working principle of SK38A-TP rectifier.

Application Field

SK38A-TP is mainly used in the communication and radio frequency (RF) field due to its wide dynamic range, excellent immunity against load variation, and precision linear response. This rectifier can also be used in the power applications, such as in the mobile power amplifiers, where it provides excellent conversion efficiency. Other than that, it is also used in the industrial automation application, where it serves as a reliable current source. In addition, SK38A-TP rectifier is suitable for the battery charging and discharging system, such as in the consumer electronic products, due to its robust current regulation and thermal protection feature. This device can also be used in solar power system, as it has enough output power to drive the solar panels and effectively convert the solar radiation into electrical energy.

Working Principle

The SK38A-TP has a simplified structure, which is comprised of an avalanche diode, a rectifying diode, and an MOSFET integrated circuit. The avalanche diode, which works as the shunt regulator, generates a constant voltage across the load. The MOSFET integrated circuit, which acts as a current regulator, controls the current and ensures that the voltage across the load remains constant. The rectifying diode, which acts as the input protection, prevents the reverse current from flowing back into the input and damaging the device. The avalanche diode and the rectifying diode work together to rectify the input AC voltage and ensure that the output current remains constant. The MOSFET integrated circuit monitors the voltage and adjusts the current output by controlling the on/off operation of the MOSFET. This device also has a built-in thermal protection that shuts down the current when the temperature rises above the safety limit.

Conclusion

SK38A-TP rectifier is widely used in various applications due to its excellent performance characteristics. Its main functions include providing a reliable current source and regulating the output current in a wide range of operational ranges. In addition, this device also has a thermal protection feature that can effectively protect it from the damages caused by high temperature.

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