The SS3H9 is a surface-mount Schottky Barrier Rectifier manufactured by Vishay. It is designed for high-frequency rectification and freewheeling applications where low forward voltage drop and fast switching speeds are essential.

Applications

• Switching Mode Power Supplies (SMPS): Used as a rectifier in the output stage of SMPS to improve efficiency.
• DC-DC Converters: Rectifies the output voltage in DC-DC converters for stable power delivery.
• Freewheeling Diode: Provides a path for current flow when inductive loads are switched off.
• Reverse Polarity Protection: Protects circuits from damage due to reverse polarity connections.
• High-Frequency Inverters: Used in high-frequency inverters to improve efficiency and reduce switching losses.

Features

• Low Forward Voltage Drop: Minimizes power losses and improves efficiency.
• Fast Switching Speed: Enables efficient operation at high frequencies.
• High Surge Current Capability: Withstands high surge currents without damage.
• Surface Mount Package: Allows for easy and efficient board assembly.
• High Reliability: Designed for long-term reliability and stable performance.
• RoHS Compliant: Meets environmental standards for hazardous substance restrictions.

Benefits

• Increased Efficiency: Low forward voltage drop and fast switching speeds improve the efficiency of power conversion circuits.
• Reduced Power Losses: Minimizes power dissipation, resulting in cooler operation and longer component life.
• Enhanced System Performance: Fast switching speeds enable higher operating frequencies and improved transient response.
• Simplified Design: Small surface mount package simplifies board layout and reduces component count.
• Improved Reliability: High surge current capability and robust construction ensure reliable operation in demanding applications.

Technical Specifications

The SS3H9 typically has a forward voltage drop of around 0.5V at a forward current of 3A. It has a maximum repetitive peak reverse voltage of 90V. The operating temperature range is generally -55°C to +150°C. The package is typically an SMC (DO-214AB).