The **CSCM1480S-R40M** is a high-performance, surface-mount (SMD) power inductor. It is commonly used in DC-DC converters and high-current power supplies where high efficiency and low electromagnetic interference (EMI) are required. --- ### 1. General Specifications Based on the part number nomenclature (specifically the "R40M" suffix), the primary electrical characteristics are outlined below: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.40 µH (Microhenries) | | **Tolerance** | ±20% (indicated by "M") | | **Structure** | Shielded Magnetic Construction | | **Mounting Type** | SMD (Surface Mount Device) | | **Core Material** | Composite Metal/Alloy (High Saturation) | --- ### 2. Key Electronic Features #### A. High Saturation Current ($I_{sat}$) This part is designed with a metal composite core. Unlike traditional ferrite inductors that drop inductance sharply when current increases, the CSCM series features a **soft saturation** characteristic. This allows the component to handle high transient current spikes without failing. #### B. Low DC Resistance (DCR) The "1480" size (typically 14mm x 14mm base) allows for thicker copper windings. This results in extremely low DCR, which: * Minimizes power loss (Heat). * Increases overall power supply efficiency. #### C. Magnetic Shielding The inductor is fully encapsulated in a magnetic alloy powder. This provides: * **Low EMI:** Prevents the magnetic field from interfering with neighboring components. * **Low Acoustic Noise:** Reduces "buzzing" caused by magnetostriction in high-frequency switching. --- ### 3. Application Areas The CSCM1480S-R40M is typically found in high-demand electronic environments: * **Computing:** Voltage Regulator Modules (VRMs) for CPUs and GPUs. * **Industrial:** High-current DC-DC point-of-load (POL) converters. * **Automotive:** Infotainment systems and ADAS modules (if AEC-Q200 qualified). * **Telecom:** Base station power distribution. --- ### 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **CSCM** | Series Code (Metal Composite Type) | | **1480** | Dimensions (Approx. 14.0 x 14.0 x 8.0 mm) | | **S** | Shielded Type | | **R40** | Inductance Value (R40 = 0.40 µH) | | **M** | Tolerance (M = ±20%) |