The DO3308P-685 is a surface mount shielded power inductor manufactured by Coilcraft. It's designed for use in a wide range of power supply applications where efficient energy storage and low DC resistance are critical.

Applications

• DC-DC converters: Used in step-up (boost), step-down (buck), and inverting power supplies.
• Power amplifiers: Provides filtering and energy storage.
• Filters: Suitable for use in low-pass, high-pass, and band-pass filter circuits.
• Voltage regulators: Found in linear and switching voltage regulators.
• Portable devices: Ideal for applications in smartphones, tablets, and other battery-powered electronics due to its small size and high efficiency.

Features

• Shielded construction: Minimizes electromagnetic interference (EMI).
• Small size: Compact design allows for high-density circuit layouts.
• Surface mount: Designed for automated assembly processes.
• High current handling: Capable of withstanding high DC currents without saturation.
• Low DC resistance (DCR): Reduces power losses and improves efficiency.

Benefits

• Reduced EMI: The shielded construction helps to reduce electromagnetic interference, improving the overall performance of the electronic device.
• Increased efficiency: The low DCR minimizes power losses, resulting in a more efficient power supply.
• Space saving: The small size allows for more compact circuit layouts, which is important in portable devices.
• Reliable performance: The inductor is designed to withstand high currents and temperatures, ensuring reliable performance in demanding applications.
• Simplified assembly: The surface mount design allows for automated assembly, reducing manufacturing costs.

Additional Details

The DO3308P-685 has an inductance of 68 µH. Its saturation current is typically around 0.95 amps, and its DC resistance is approximately 0.48 ohms. It is designed to operate over a wide temperature range, typically from -40°C to +125°C. The component is RoHS compliant, ensuring that it does not contain any hazardous substances.

This inductor is often chosen in circuits where minimizing board space and maximizing efficiency are critical considerations. Its robust design and shielded construction make it a reliable component for a variety of power supply applications.