The SWPA3015S4R7NT from Sunlord is a shielded power inductor designed for use in various power management applications. It is characterized by its compact size and effective electromagnetic interference (EMI) shielding. The '4R7' in the part number indicates an inductance value of 4.7µH.

Applications

• DC-DC Converters: Ideal for step-up (boost), step-down (buck), and inverting converters.
• Power Supplies: Used in regulated power supplies for various electronic devices.
• Mobile Devices: Suitable for use in smartphones, tablets, and other portable electronics.
• LED Drivers: Can be used to provide stable current for LED lighting applications.
• Point-of-Load (POL) Regulators: Used for efficient voltage regulation at the load.

Features

• Shielded Construction: Minimizes electromagnetic interference (EMI) for cleaner signal integrity.
• Compact Size: Its small footprint (3.0 x 3.0 x 1.5 mm) allows for space-saving designs.
• High Current Capability: Handles significant DC current without saturation.
• Low DC Resistance (DCR): Reduces power losses and improves efficiency.
• Surface Mount Device (SMD): Facilitates automated assembly processes.

Benefits

• Improved Efficiency: The low DCR results in lower power dissipation and higher energy efficiency.
• Reduced EMI: The shielded design minimizes electromagnetic radiation and susceptibility.
• Space Saving: The compact footprint allows for denser circuit board layouts.
• Enhanced Reliability: The robust construction ensures stable performance in diverse environments.
• Simplified Assembly: The SMD design allows for automated placement and soldering.

Additional Details

The SWPA3015S4R7NT inductor utilizes a ferrite core material, known for its balance between inductance and saturation current. It is RoHS compliant, which means it meets environmental standards by restricting the use of hazardous substances. Its operating temperature range typically spans from -40°C to +125°C. The saturation current is around 1.4A, and the rated current is approximately 1.2A. In DC-DC converter applications, it smooths the current flow, reducing ripple and improving regulation performance. This makes it particularly suitable for applications where clean power is critical and EMI must be minimized, such as in sensitive measurement or communication circuits.