The **M5R75XL-R** is a high-performance, shielded power inductor primarily used in DC-DC converter applications and power management modules. It is manufactured by companies like **Coilcraft** (often part of the MSS or generic high-current series). Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. Key Technical Specifications The part number typically encodes specific electrical values. While specific suffixes can vary by manufacturer, here are the standard parameters for this class of component: | Parameter | Typical Value | Description | | :--- | :--- | :--- | | **Inductance** | 7.5 µH | The nominal inductance at 100 kHz. | | **Tolerance** | ±20% (M) | The allowable deviation from nominal inductance. | | **DC Resistance (DCR)** | ~25 - 35 mΩ | Max resistance of the internal copper winding. | | **Isat (Saturation Current)** | ~4.0 - 5.5 A | Current at which inductance drops by 10-30%. | | **Irms (RMS Current)** | ~3.5 - 4.5 A | Continuous current causing a 40°C temperature rise. | | **Shielding** | Shielded | Magnetic shielding to reduce EMI. | --- ### 2. Physical and Material Construction The "R" in the suffix usually denotes **RoHS Compliance** (Lead-free), while the "XL" often refers to an extended life or high-current layout. * **Core Material:** Usually a Ferrite core which offers low core losses at high frequencies. * **Terminations:** Matte Tin over Nickel over Phosphor Bronze. * **Form Factor:** Surface Mount Device (SMD). * **Operating Temperature:** Generally rated for **-40°C to +125°C**. --- ### 3. Application Use Cases This specific inductor is designed for power density and efficiency. Common applications include: 1. **DC-DC Converters:** Used as the energy storage element in Buck, Boost, or SEPIC converters. 2. **Point of Load (POL):** Voltage regulation for CPUs, FPGAs, and GPUs. 3. **Battery Powered Devices:** Ideal for laptops and tablets due to the low profile and high efficiency. 4. **Noise Filtering:** Acts as a low-pass filter in power supply lines to suppress high-frequency ripple. --- ### 4. Comparison: Shielded vs. Unshielded | Feature | M5R75XL-R (Shielded) | Unshielded Equivalent | | :--- | :--- | :--- | | **EMI/EMC** | Very Low Emissions | Higher stray magnetic fields | | **Component Density** | Can be placed near sensitive parts | Needs physical clearance | | **Saturation** | Generally "Hard" saturation | Generally "Soft" saturation | ---