The SWPA8040S3R9MT with Power Inductors 3.9uH ±20% SMD,8.0x8.0x4.0mm RoHS manufactured by Sunlord is a power inductor designed for a range of applications, including EMI filtering, power supplies, frequency selection, and DC/DC converters. The inductor has a low DC resistance of 0.080 O and a frequency range of 10kHz-10MHz. It is shielded for EMI noise reduction, has high current ratings of up to 8.0 A, and is RoHS compliant. It is a surface-mount device (SMD) with outstanding heat resistance, with dimensions of 8.0mm x 8.0mm x 4.0mm.