The VLCF4020T-100MR85-PF is a wire-wound power inductor manufactured by TDK Corporation. It is designed for use in power supply circuits, offering high inductance and low DC resistance in a compact form factor. This inductor is well-suited for a variety of applications requiring efficient power conversion and filtering.

Applications

• DC-DC Converters: Used in step-up (boost), step-down (buck), and inverting converters.
• Power Supplies: Filtering and energy storage in power supplies for various electronic devices.
• LED Lighting: Power management and filtering in LED driver circuits.
• Portable Devices: Power regulation in smartphones, tablets, and other portable electronics.
• Automotive Electronics: Power conversion in automotive systems, such as infotainment and engine control.

Features

• Wire-Wound Construction: Provides high inductance and excellent current handling capabilities.
• Low DC Resistance (DCR): Minimizes power losses and improves efficiency.
• Compact Size: Small footprint for space-constrained applications.
• High Saturation Current: Withstands high current levels without significant inductance drop.
• Shielded Construction: Reduces electromagnetic interference (EMI).
• RoHS Compliant: Compliant with Restriction of Hazardous Substances (RoHS) directive.

Benefits

• Efficient Power Conversion: Minimizes power losses in power supply circuits.
• Stable Inductance: Provides consistent performance over a wide range of operating conditions.
• Reduced EMI: Minimizes electromagnetic interference with other components.
• Space Saving: Compact size allows for high-density circuit designs.
• Reliable Performance: Designed for robust and reliable operation in demanding environments.

Additional Details

The VLCF4020T-100MR85-PF inductor has specific electrical parameters, including inductance value (10µH), tolerance, saturation current, and DC resistance, as specified in the TDK datasheet. It also has a rated current, which is the maximum continuous current the inductor can handle without exceeding a specified temperature rise. The self-resonant frequency (SRF) is another important parameter, indicating the frequency at which the inductor's impedance is at its maximum. Exceeding this frequency can reduce the inductor's effectiveness.

The physical dimensions of the inductor are 4.0mm x 4.0mm x 2.0mm. TDK provides detailed application notes and simulation models to help engineers optimize the inductor's performance in various circuit designs. This inductor is typically used in conjunction with other components, such as capacitors and integrated circuits, to create complete power supply solutions. Proper thermal management is crucial to prevent overheating and ensure long-term reliability.