DC LC Filter — Compact EMI/Noise Suppression Module Key benefits — why you need this Reduces harmonic distortion and suppresses electromagnetic interference (EMI) in DC power lines, improving stability and reducing noise that can disrupt sensors, audio, communications, and control electronics. Designed for current circuits: available in versions that support 10A or 20A loads with a maximum input of DC50V, allowing use with common automotive, motorcycle, and industrial DC systems. Compact, robust construction minimizes board space while providing multistage filtering for effective noise attenuation in harsh electrical environments. How it solves problems / what makes it stand out Multistage filtering: integrates primary LC filtering, a commonmode choke, and a secondary LC stage on a doublesided FR4 PCB for stronger, broaderband noise suppression than a singlestage filter. Component selection targets performance: lowloss magnetic For ring inductors (2PCS), a common mode inductor with flat copper strip (1PCS), 50V 470µF electrolytic capacitors (2PCS), and film capacitors (100nF 2PCS, 470pF 1PC) provide stable filtering with minimal added loss. current layout: shortestpath routing between current traces reduces series resistance and heat buildup, supporting stable operation under heavy load while preserving signal integrity and circuit reliability. Key specifications and attributes Function: DC LC electromagnetic interference filter for noise suppression and harmonic reduction Maximum input voltage: DC 50V Current support: 10A or 20A versions PCB: doublesided FR4, dimensions 42X77X1.6MM Inductors: lowloss magnetic For ring inductors (2PCS); common mode inductor with flat copper strip (1PCS) Capacitors: 50V 470µF electrolytic (2PCS); film capacitors 100nF (2PCS) and 470pF (1PC) Design focus: low loss, current capacity, reduced heat, and minimal external interference Typical applications / use scenarios Automotive power systems: clean DC supply for ECUs, infotainment, sensors, and lighting circuits to reduce interference and improve reliability in noisy vehicle environments. Motorcycles and powersports: stabilize batteryfed electronics and audio systems where alternator and ignition noise are common. Industrial DC equipment and motor controllers: protect control electronics and communication interfaces in harsh or current installations where EMI and harmonics can cause faults. Installation and performance notes Mount on the DC power path close to the device or subsystem being protected for results. Choose the 10A or 20A version according to your continuous current requirements; the board layout minimizes resistance and heat under heavy loads. Designed for environments requiring robust EMC/EMI suppression without significant insertion loss. If you need specific connector or mounting details, provide your application context and current rating preference (10A or 20A) to confirm fit and compatibility.