The CDRH58D18RNP-4R7MC is a shielded power inductor manufactured by Sumida America Components Inc. The '4R7MC' designation indicates its inductance value, which is 4.7 μH (microhenries). These inductors are designed for use in DC-DC converters and power supply circuits, particularly in applications requiring low EMI and efficient power conversion. The shielded construction minimizes electromagnetic interference, making it suitable for sensitive electronic devices.

Applications

• DC-DC Converters: Utilized in step-up (boost), step-down (buck), and inverting converters to store and release energy, thereby regulating the output voltage.
• Power Supplies: Employed in various power supply units for electronic devices, providing filtering and energy storage.
• Portable Devices: Commonly found in smartphones, tablets, laptops, and other battery-powered devices where space is limited and efficiency is crucial.
• LED Lighting: Used in LED driver circuits to regulate the current flowing through the LEDs, ensuring consistent brightness and longevity.
• Automotive Electronics: Utilized in various automotive systems, such as engine control units (ECUs), infotainment systems, and lighting systems.

Features

• Shielded Construction: Minimizes electromagnetic interference (EMI) and reduces noise.
• Compact Size: Small footprint allows for high-density circuit designs.
• High Current Handling: Capable of withstanding high current levels without saturation.
• Low DC Resistance (DCR): Reduces power losses and improves efficiency.
• Surface Mount Technology (SMT): Designed for automated assembly on printed circuit boards (PCBs).

Benefits

• Reduced EMI: Shielded construction minimizes interference with other sensitive components in the circuit.
• Space Saving: Compact size enables smaller and more portable electronic devices.
• Improved Efficiency: Low DCR reduces power dissipation and increases the overall efficiency of the power supply.
• Reliable Performance: High current handling capability ensures stable operation under demanding conditions.
• Simplified Assembly: SMT design allows for automated and cost-effective manufacturing.

Additional Details

The CDRH58D18RNP-4R7MC inductor is typically constructed with a ferrite core and a wound copper wire. The ferrite core provides high permeability, which increases the inductance value. The shielded construction is achieved by enclosing the inductor in a metallic shield, which blocks electromagnetic radiation.

Typical Specifications:

• Inductance: 4.7 μH
• Tolerance: ±20% (check the datasheet for exact tolerance)
• DC Resistance (DCR): Low, typically in the mΩ range (check datasheet for exact value)
• Saturation Current: Specifies the current at which the inductance drops by a certain percentage (e.g., 10% or 20%).
• Rated Current: Specifies the maximum continuous current the inductor can handle without overheating.
• Operating Temperature Range: typically -40°C to +125°C

Always refer to the manufacturer's datasheet for the most accurate and up-to-date specifications and application recommendations. The datasheet will provide detailed information on electrical characteristics, mechanical dimensions, and recommended soldering profiles.