The SPM4020T-R27M-LR is a shielded power inductor manufactured by TDK Corporation. This inductor is designed to efficiently handle power in DC-DC converters and other power supply applications. Its shielded construction is vital for minimizing electromagnetic interference (EMI), making it suitable for use in sensitive electronic equipment where noise reduction is crucial. The compact size allows for high-density mounting in space-constrained applications.

Applications:

• DC-DC converters in portable devices
• Power supplies for smartphones and tablets
• LED drivers
• Point-of-Load (POL) regulators
• Noise filtering in power lines
• Automotive electronics

Features:

• Shielded structure for low EMI
• Compact 4.0 x 4.0 mm footprint
• Low DC resistance (DCR) for high efficiency
• High current handling capability
• Operating temperature range suitable for industrial applications
• Surface Mount Technology (SMT) compatible
• RoHS compliant

Benefits:

• Reduced electromagnetic interference with surrounding components
• Efficient power conversion due to low DCR
• Smaller and lighter power supply designs
• Reliable performance in harsh environments
• Easy integration into automated manufacturing processes

Additional Details:

The SPM4020T-R27M-LR features an inductance of 0.27 μH. The 'M' typically signifies a tolerance of ±20%. The saturation current, a critical parameter, must be higher than the peak current in the application to prevent inductance drop and performance degradation. The 'LR' likely refers to a specific material composition or winding configuration optimized for particular electrical characteristics or performance parameters. The shielded design utilizes a magnetic material to enclose the inductor core, effectively containing the magnetic field and minimizing EMI. The datasheet provides comprehensive specifications, including saturation current, DC resistance, self-resonant frequency (SRF), and operating temperature range. Thermal management may be essential under high-current conditions to prevent overheating and ensure reliable operation. The inductor's robust construction and stable performance are key to achieving efficient and reliable power delivery in diverse electronic applications.