The SCDS74T-4R7M-N is a shielded power inductor manufactured by Chilisin. Power inductors are essential components in power supplies and DC-DC converters, where they store energy and filter out unwanted noise. Shielded inductors, like this one, provide improved electromagnetic compatibility (EMC) by containing the magnetic field within the inductor body.

Applications

• DC-DC converters: Used in step-up (boost), step-down (buck), and inverting converters to regulate voltage levels.
• Power supplies: Employed in both linear and switching power supplies for filtering and energy storage.
• Notebook computers: Found in the power management circuits of laptops for voltage regulation and filtering.
• Portable devices: Used in smartphones, tablets, and other mobile devices for efficient power conversion.
• LED lighting: Applied in LED driver circuits to regulate current and voltage for consistent light output.
• Automotive electronics: Utilized in automotive power systems for various electronic modules.

Features

• Shielded construction: Minimizes electromagnetic interference (EMI) by containing the magnetic field.
• High saturation current: Able to handle large currents without significant inductance drop.
• Low DC resistance (DCR): Reduces power losses and improves efficiency.
• Compact size: Designed for space-constrained applications.
• Surface mount device (SMD): Suitable for automated assembly processes.
• RoHS compliant: Meets environmental standards for hazardous substances.

Benefits

• Reduced EMI: Shielded design minimizes interference with other components, improving system performance.
• High efficiency: Low DCR reduces power losses, leading to more efficient power conversion.
• Stable performance: Maintains stable inductance under varying current and temperature conditions.
• Compact design: Small size allows for integration into densely populated circuit boards.
• Easy assembly: SMD design simplifies the manufacturing process.
• Reliable operation: Robust construction ensures long-term reliability in demanding applications.

Additional Details

The SCDS74T-4R7M-N has an inductance value of 4.7 μH (microhenries). The “M” in the part number indicates the inductance tolerance, which is typically ±20%. The inductor's dimensions are approximately 7.4mm x 7.4mm, with a height around 4mm, making it suitable for compact electronic devices. The saturation current rating specifies the maximum current the inductor can handle before its inductance drops significantly. The operating temperature range is typically between -40°C and +125°C. Always consult the manufacturer's datasheet for precise specifications, including saturation current, rated current, DCR, and self-resonant frequency (SRF), to ensure it meets the requirements of the specific application.