The **MC1093A-R56M** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converter applications. It belongs to a class of "Molded Power Inductors" designed for high-density power electronics. --- ### 1. Technical Specifications The part number follows a standard naming convention that defines its physical and electrical characteristics. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.56 µH (indicated by "R56") | | **Tolerance** | ±20% (indicated by "M") | | **Case Size** | 1093 (Approx. 10mm x 11mm x 9.3mm) | | **Material** | Metal Alloy Powder (Composite) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Key Features * **High Current Handling:** Due to the metal composite core, it can handle significant saturation currents without a sharp drop in inductance. * **Low Core Loss:** Designed for high-frequency switching power supplies (typically up to 1MHz or higher). * **Magnetic Shielding:** The molded construction naturally provides magnetic shielding, reducing Electromagnetic Interference (EMI) with surrounding components. * **Soft Saturation:** Unlike ferrite cores that drop inductance abruptly, this part exhibits "soft saturation," making it more stable under transient loads. --- ### 3. Application Use Cases The MC1093A-R56M is typically found in the power stages of high-performance electronics: 1. **Voltage Regulator Modules (VRMs):** Found on motherboards and server cards to step down voltage for CPUs and GPUs. 2. **DC-DC Converters:** Used in Point-of-Load (POL) converters where high efficiency and small footprint are required. 3. **Industrial Power Supplies:** Used in battery-powered systems where heat dissipation and space are critical constraints. --- ### 4. Part Number Breakdown Here is how to read the code: * **MC:** Series prefix (Molded Composite). * **1093A:** Physical dimensions and revision (10mm footprint, 9.3mm height). * **R56:** Inductance value ($0.56$ Microhenries). * **M:** Tolerance code ($M = \pm 20\%$).