The CDRH124-3R9MC is a shielded power inductor manufactured by Sumida America Components Inc. It is designed for DC-DC converters and power supply circuits, providing efficient energy storage and filtering. Its shielded construction minimizes electromagnetic interference (EMI), and its compact size is ideal for space-constrained applications. The 3R9 denotes an inductance value of 3.9 µH.

Applications

• DC-DC Converters: Used in buck, boost, and flyback converter circuits.
• Power Supplies: Integrated into various power supply units for filtering and voltage regulation.
• Point-of-Load (POL) Regulators: Employed in POL regulators to provide stable power to sensitive components.
• LED Lighting: Utilized in LED driver circuits for efficient power conversion.
• Automotive Electronics: Found in automotive power systems and control units.

Features

• Shielded Construction: Minimizes electromagnetic interference (EMI).
• High Current Capacity: Handles high ripple currents without saturation.
• Low DC Resistance (DCR): Reduces power losses and improves efficiency.
• Compact Size: Space-saving design for high-density applications.
• RoHS Compliant: Complies with environmental regulations.

Benefits

• Reduced EMI: Minimizes interference with surrounding circuitry.
• High Efficiency: Low DCR contributes to improved power conversion efficiency.
• Stable Inductance: Maintains stable performance under varying current and temperature.
• Space Saving: Enables smaller and more compact power supply designs.
• Reliable Operation: Designed for reliable performance in demanding environments.

Technical Specifications

The CDRH124-3R9MC has an inductance of 3.9 µH. While detailed specifications like saturation current, DC resistance, and self-resonant frequency require consulting the official datasheet, this inductor is designed for robust performance in a variety of DC-DC converter applications. Its shielded construction ensures minimal EMI, and its compact size makes it suitable for portable devices and other space-constrained designs. The high current handling capability allows it to be used in high-power applications as well.