The SMTDR43-3R9M with Power Inductors 3.9uH ±20%, 1.33A SMD, 4.5x4x3.2mm RoHS manufactured by 3L COILS is an Electronic device primarily used in designing and building circuits and providing electrical power and signal flow to other electronic components. It is a 3.9uH ±20%, 1.33A SMD Inductor with 4.5x4x3.2mm RoHS compliant package, which is manufactured by 3L COILS. This product comes with high saturation current, low equivalent series resistance, and high inductance coefficient, making it well-suited for portable electronic devices such as smartphones, tablets, and laptops. It also has high quality test performance and a high MTBF rate, ensuring reliable operation during long-term use. Furthermore, this product is RoHS compliant which makes it safe and environmentally friendly.