HER303GA-G

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The HER303GA-G is a rectifier diode module which extends the capabilities of traditional rectifier components. It is designed for high power rectification applications and is suitable for a variety of commercial, industrial and automotive applications. The HER303GA-G uses four high current Schottky barrier rectifiers that are in parallel electrical-connection. It is RoHS compliant and supplied in a plug-in surface-mount package of dimensions 9.7*6.3*3.3mm.

Key Features

• Rectified current: 30A
• Forward Voltage Drop: 0.85V (Typical)
• Power dissipation: 6W
• High-temperature soldering: 250℃ Max

Application Field

The HER303GA-G is ideal for low voltage power supply onboards and low voltage battery charging systems. It enables developers to quickly and easily design high power rectification systems without the need for specialized components and systems. Applications include but are not limited to:

• Switch mode power supplies for consumer and industrial electronics
• Battery charging systems
• High power rectification systems
• Automatic door locks
• Automotive components

Working Principle

The HER303GA-G unit is composed of four Schottky barrier rectifiers with parallel electrical connection. The rectifiers are either two SB310s, which are low forward voltage drop rectifiers, or two SB512s which are ultra-low forward voltage drop rectifiers. The two SB310s are in parallel and their voltages are summed up to get the output of their bridge rectification, while the two SB512s are also paralleled, but their voltages are not added up.

The four rectifiers are connected in series with a common anode, and the common cathode is connected to the output terminal. The circuit works in a voltage-to-current conversion manner, where it rectifies the incoming AC voltage into pulsed DC. Since the peak current of each diode is much higher than the rated output current, the duty cycle of the switching process ensures that the diode only conducts at certain intervals, and the output current is averaged out during this process.

The HER303GA-G is designed with thermal derating in order to protect itself against overheating. This feature cuts off the power supply to the module at a critical temperature threshold, thus preventing damage and costlier troubleshooting.

Conclusion

In conclusion, the HER303GA-G rectifier diode is an excellent option for high power rectification applications. It is easy to install and durable, offering many benefits in terms of energy efficiency and cost savings. Its thermal derating limits power supply to the module at critical temperature thresholds, thus protecting the module from damage and costlier troubleshooting. Through a simple circuit composed of four Schottky barrier rectifiers, it is able to convert incoming AC voltage into efficient DC voltage, thereby making it suitable for a variety of commercial, industrial and automotive applications.

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