The **MLZ2012A3R3W** is a high-performance multilayer chip inductor manufactured by **TDK Corporation**. It belongs to the MLZ series, which is specifically designed for decoupling circuits in power supply lines. --- ## 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 3.3 μH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.23 Ω (±30%) | | **Rated Current** | 450 mA (Maximum) | | **Self-Resonant Frequency** | 60 MHz (Minimum) | | **Operating Temperature** | -55°C to +125°C | | **Package / Case** | 0805 (2012 Metric) | | **Dimensions (L x W x T)** | 2.00mm x 1.25mm x 1.25mm | --- ## 2. Key Features * **Multilayer Structure:** Unlike wire-wound inductors, this uses a layered ceramic structure, providing better physical reliability and a smaller footprint. * **Low DC Resistance:** Optimized for power lines to minimize energy loss and heat generation. * **Magnetic Shielding:** The closed magnetic circuit structure reduces electromagnetic interference (EMI) with surrounding components. * **Broadband Impedance:** Provides excellent noise suppression across a wide frequency range. --- ## 3. Naming Convention Breakdown The part number **MLZ2012A3R3W** can be decoded as follows: | Segment | Meaning | | :--- | :--- | | **MLZ** | Series Name (Multilayer Inductor for Power Lines) | | **2012** | Dimensions (2.0mm x 1.25mm) | | **A** | Characteristic Type (Standard type) | | **3R3** | Inductance Value (3.3 μH) | | **W** | Packaging style (Taping/Reel) | --- ## 4. Typical Applications This inductor is commonly used in portable electronic devices where space is limited and power efficiency is critical: 1. **Smartphones & Tablets:** For decoupling power lines of application processors. 2. **Digital Cameras:** In power management modules. 3. **DC-DC Converters:** Used in low-power voltage regulation circuits. 4. **Noise Filtering:** Suppressing high-frequency noise in sensitive analog circuits.