The SCD0403T-390K-S is a surface mount power inductor manufactured by Yageo. It's designed for applications where a small footprint and reliable performance are required, particularly in power supply and filtering circuits. The shielded construction minimizes electromagnetic interference (EMI).

Applications

• DC-DC converters
• Power supplies for portable devices
• EMI filtering
• Buck converters
• Boost converters

Features

• Shielded construction
• Surface mount design
• Compact size (4.5mm x 4.0mm x 3.2mm)
• Inductance: 39μH (390K)
• Tolerance: ±10%
• High saturation current

Benefits

• Reduced EMI emissions for cleaner circuit operation.
• Simplified PCB layout and automated assembly.
• Space-saving design allows for smaller devices.
• Stable inductance value for reliable performance.
• Suitable for high-current applications.

Technical Specifications:

The SCD0403T-390K-S power inductor employs a ferrite core to achieve a good balance between inductance, saturation current, and core loss. It is designed to operate over a temperature range from -40°C to +125°C. The typical rated current is approximately 0.6A, with a saturation current of around 0.8A. The DC resistance (DCR) is relatively low, typically around 0.25 ohms, minimizing power dissipation. The “S” suffix denotes standard packaging suitable for automated pick-and-place equipment.

This inductor finds common use in applications needing a compact and efficient power solution. Its shielded construction is particularly beneficial in sensitive electronic devices where electromagnetic interference must be minimized.