The **CSAC0750-R82M** is a high-current, shielded surface-mount (SMD) power inductor. This component is typically used in DC-DC converters and power management modules where high efficiency and low electromagnetic interference (EMI) are required. ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Value | Details | | :--- | :--- | :--- | | **Inductance** | 0.82 µH | The "R82" in the part number indicates 0.82 microhenries. | | **Tolerance** | ±20% | The "M" suffix represents a standard 20% tolerance. | | **Footprint (Size)** | 0750 | Generally refers to dimensions (approx. 7.0 x 7.5 mm). | | **DCR (Direct Current Resistance)** | Low | Designed to minimize power loss via heat. | | **Shielding** | Magnetic Shielded | Constructed to contain magnetic flux and reduce EMI. | --- ### 2. Key Internal Components The CSAC series usually utilizes a metal composite or ferrite core technology. Here is a breakdown of the internal "parts": 1. **Magnetic Core:** Usually a carbonyl iron powder or metal alloy core. This allows for high saturation currents (Isat), meaning the inductor can handle high current spikes without losing its inductive properties. 2. **Copper Wire:** Heavy-gauge flat or round copper wire is wound inside to provide the lowest possible DC resistance. 3. **Molding/Casing:** The assembly is encapsulated in a magnetic resin or pressed powder, which acts as a "shield." 4. **Terminals:** Lead-free (RoHS compliant) solder pads designed for SMT (Surface Mount Technology) assembly. --- ### 3. Applications and Usage This specific inductor is ideal for high-density power applications: * **Voltage Regulator Modules (VRMs):** Found on computer motherboards and servers. * **DC/DC Converters:** Stepping down voltage for CPUs, GPUs, and FPGAs. * **Battery Powered Devices:** High efficiency helps extend battery life. * **Automotive Electronics:** Used in infotainment and driver assistance systems due to its robust thermal performance. --- ### 4. Comparison Table: R82M vs. Similar Inductors | Feature | CSAC0750-R82M | Standard Ferrite Inductor | | :--- | :--- | :--- | | **Saturation Current** | Very High | Moderate | | **EMI Shielding** | Excellent | Poor to Moderate | | **Acoustic Noise** | Low (Solid construction) | Can "buzz" under load | | **Size/Profile** | Low profile | Typically bulkier |