The Coilcraft 1111SQ-39NGEC is a surface mount power inductor designed for high-current applications. This inductor is part of Coilcraft's SQ series, known for its low DC resistance and high saturation current, making it suitable for use in power supplies and DC-DC converters.

Applications

• DC-DC converters: Step-up, step-down, and inverting converters.
• Power supplies: Voltage regulation and filtering in power supplies.
• Point-of-Load (POL) regulators: Providing localized power conversion for sensitive components.
• Filtering: Noise reduction in power lines.
• Energy storage: Inductive energy storage in power circuits.

Features

• Low DC resistance (DCR) minimizes power losses.
• High saturation current provides stable inductance under load.
• Surface mount design simplifies assembly.
• Shielded construction reduces electromagnetic interference (EMI).
• High operating temperature for use in demanding environments.

Benefits

• Improves the efficiency of power conversion circuits.
• Reduces heat generation due to low DCR.
• Enables stable and reliable operation under high current conditions.
• Simplifies PCB assembly and reduces manufacturing costs.
• Minimizes EMI, improving system performance and reliability.

Additional Details

The 1111SQ-39NGEC has a nominal inductance value of 3.9 µH. The specific saturation current and DCR values can be found in the product datasheet. This inductor is typically used in conjunction with switching controllers, capacitors, and other passive components to create a complete power conversion solution. The operating frequency should be selected based on the inductor's characteristics and the application requirements. Proper thermal management may be necessary in high-current applications to ensure reliable operation. The part uses a ferrite core material.