The CDRH5D28R-180NC is a shielded power inductor manufactured by Sumida America Components Inc. It's designed for use in various power electronics applications where efficient energy storage and noise suppression are critical. The 'CDRH' designation indicates a specific series of shielded power inductors from Sumida known for their compact size and robust construction. The '5D28R' likely refers to the physical dimensions and core material, while '180NC' specifies the inductance value (18µH) and tolerance.

Applications

• DC-DC Converters: Used in step-up (boost), step-down (buck), and inverting converters for voltage regulation.
• Power Supplies: Employed in both linear and switching power supplies for filtering and energy storage.
• LED Lighting: Found in LED drivers to provide a stable current source for LEDs.
• Portable Devices: Suitable for use in smartphones, tablets, and other battery-powered devices due to its small size and efficiency.
• Automotive Electronics: Can be implemented in automotive systems like engine control units (ECUs) and infotainment systems.

Features

• Shielded Construction: Minimizes electromagnetic interference (EMI) and radio frequency interference (RFI).
• Compact Size: Designed for space-constrained applications.
• High Current Capability: Can handle significant current levels without saturating.
• Low DC Resistance (DCR): Reduces power losses and improves efficiency.
• Surface Mount Device (SMD): Easy to mount on printed circuit boards (PCBs) using automated assembly techniques.

Benefits

• Improved Efficiency: Low DCR minimizes power dissipation, leading to higher overall system efficiency.
• Reduced EMI: Shielded construction reduces electromagnetic emissions, ensuring compliance with regulatory standards and preventing interference with other components.
• Smaller Footprint: Compact size allows for denser circuit designs and smaller product form factors.
• Enhanced Reliability: Robust construction ensures reliable performance in harsh environments.
• Stable Inductance: Maintains stable inductance value over a wide range of temperatures and frequencies.

Additional Details

The CDRH5D28R-180NC has an inductance of 18µH with a specified tolerance. The saturation current and rated current are important parameters to consider when selecting this inductor for a specific application. The saturation current is the current level at which the inductance begins to drop significantly, while the rated current is the maximum continuous current that the inductor can handle without overheating. The operating temperature range is also a critical specification, typically ranging from -40°C to +125°C. The shielded construction contributes to its ability to meet stringent EMI/RFI requirements.