The **M5R15ZQ-R** is a high-performance, shielded power inductor typically manufactured by companies like **ITG Electronics**. It is designed for high-frequency DC-DC converters, voltage regulator modules (VRMs), and power supplies where efficiency and space are critical. --- ### 1. Key Technical Specifications The component is characterized by its low DC resistance (DCR) and high saturation current. Below are the typical parameters for this series: | Parameter | Typical Value | Unit | | :--- | :--- | :--- | | **Inductance** | 0.15 (denoted by 15Z) | µH | | **Tolerance** | ±20% | % | | **Rated Current (Irms)** | 40 - 55 | A | | **Saturation Current (Isat)** | 60 - 80 | A | | **DC Resistance (DCR)** | ~0.17 - 0.25 | mΩ | | **Operating Temperature** | -40 to +125 | °C | --- ### 2. Physical Construction & Features The "M5R" series utilizes specific materials and design geometries to optimize power delivery: * **Shielded Construction:** The inductor is magnetically shielded to minimize Electromagnetic Interference (EMI), making it suitable for high-density PCB layouts. * **Manganese-Zinc (MnZn) or Composite Core:** This material provides high saturation flux density, allowing the part to handle large current spikes without the inductance dropping off sharply. * **Flat Wire/SMD Design:** The use of flat copper wire increases the surface area, reducing the "Skin Effect" at high frequencies and lowering the DCR. * **RoHS Compliant:** The "R" suffix typically denotes compliance with environmental standards (Lead-free). --- ### 3. Application Use-Cases The M5R15ZQ-R is commonly found in the following electronic systems: 1. **Server & Data Centers:** Used in multi-phase buck converters to power high-end CPUs and GPUs. 2. **Point of Load (POL) Converters:** Providing stable voltage to FPGAs and ASICs. 3. **Graphics Cards:** Managing the high-current demands of modern video processing units. 4. **High-Efficiency Power Modules:** Where thermal management and low power loss are priorities. --- ### 4. Part Number Breakdown While manufacturers vary slightly, the nomenclature generally follows this logic: ```text M5R - 15Z - Q - R | | | | Series Value Size RoHS/Tape & Reel (0.15µH) Code ```