The **MLZ2012M4R7HT000** is a high-performance multilayer ferrite inductor manufactured by **TDK Corporation**. It is specifically designed for decoupling and power supply circuits in devices where space is limited but high reliability is required. --- ### 1. Technical Specifications The following table highlights the primary electrical and physical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 4.7 µH | | **Tolerance** | ±20% | | **DC Resistance (Max)** | 0.47 Ω | | **Rated Current (Isat/Itemp)** | 350 mA | | **Self-Resonant Frequency** | 45 MHz | | **Operating Temperature** | -55°C to +125°C | | **Case Size (EIA/Metric)** | 0805 / 2012 | | **Dimensions (L x W x H)** | 2.00mm x 1.25mm x 1.25mm | --- ### 2. Key Features and Technologies * **Multilayer Structure:** Unlike wire-wound inductors, this part uses a multilayer ferrite process. This results in a compact, magnetically shielded design that minimizes EMI (Electromagnetic Interference). * **MLZ Series Optimization:** The "MLZ" series is specifically optimized for **low DC resistance** compared to standard signal-line inductors, making it suitable for power lines. * **High Temperature Stability:** The "HT" designation often indicates high-temperature tolerance, allowing it to perform reliably in automotive or industrial environments up to 125°C. * **Magnetic Shielding:** The closed magnetic circuit prevents crosstalk between components, allowing for high-density mounting on PCBs. --- ### 3. Application Areas This component is typically found in: 1. **Smartphones and Tablets:** Used in the power management units (PMU) for decoupling noise. 2. **Digital Cameras:** Filtering power lines for image sensors to reduce visual noise. 3. **Automotive Infotainment:** Providing stable power to communication modules. 4. **IoT Devices:** Due to its small 0805 footprint, it is ideal for compact wireless modules. --- ### 4. Part Number Breakdown * **MLZ:** Series Name (Multilayer Inductor for Power Lines) * **2012:** Dimensions (2.0mm x 1.25mm) * **M:** Product Internal Code * **4R7:** Inductance Value (4.7 µH) * **H:** Characteristic Type (High-frequency/High-current) * **T000:** Packaging/Internal TDK code