The **MLZ2012N100L** is a multilayer chip inductor manufactured by **TDK Corporation**. It is specifically designed for use in decoupling and power supply circuits, particularly in portable devices like smartphones and tablets where space is limited and efficiency is critical. --- ## Technical Specifications | Parameter | Value / Specification | | :--- | :--- | | **Part Number** | MLZ2012N100L | | **Inductance** | 10 $\mu$H | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.45 $\Omega$ (Typical) | | **Rated Current (Isat/Itemp)** | 120 mA | | **Case Size (EIA)** | 0805 | | **Case Size (Metric)** | 2012 (2.0mm x 1.25mm) | | **Operating Temperature** | -55°C to +125°C | --- ## Key Characteristics ### 1. Multilayer Construction Unlike wire-wound inductors, the MLZ series is built by layering ceramic and conductive materials. This results in a monolithic structure that is highly reliable and provides excellent magnetic shielding, reducing electromagnetic interference (EMI). ### 2. Low DC Resistance (DCR) The "N" and "L" designations often refer to specific material characteristics optimized for low resistance. This ensures minimal power loss and heat generation, which is vital for battery-operated electronics. ### 3. Current Handling While 120 mA is modest compared to large power inductors, it is highly optimized for the **decoupling of IC power lines**. It manages "superimposed" DC current well, meaning its inductance remains stable even as current flows through it. --- ## Typical Applications * **Mobile Devices:** Smartphones, tablets, and wearables. * **Decoupling:** Used to filter out high-frequency noise from power supply lines to sensitive ICs. * **Module Integration:** Because of its low profile (typically 0.85mm to 1.25mm height), it is ideal for thin camera modules or communication modules. --- ## Internal Structure Representation ```c /* Simplified view of a Multilayer Inductor structure */ [ Terminal ] <--- Conductive layers stacked vertically ---> [ Terminal ] Interleaved with ceramic insulation ```