The LQM21FN4R7M70L is a fixed inductor with a 4.7uH power supply choke that is manufactured by Murata. It is a SMD (Surface Mount Device) type part, and features a shield-type construction to reduce the impact of outside noise. It has an inductance tolerance of +/- 20%, a current rating of 3.5A and a maximum DC resistance of 0.25ohms, making it suitable for high frequency switching power supply applications. The LQM21FN4R7M70L is an essential component for noise reduction and EMI (ElectroMagnetic Interference) control.