The **MLC20-R33M-RC** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converters and power management modules. This specific part number follows a standard naming convention for electronic components, typically associated with manufacturers like **Mag.Layers**. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's physical and electrical characteristics: | Code Segment | Description | Specific Value | | :--- | :--- | :--- | | **MLC** | Series Type | Molded Power Inductor (Low Profile) | | **20** | Case Size | Refers to dimensions (approx. 2.0 x 1.6 mm) | | **R33** | Inductance Value | 0.33 µH (Microhenries) | | **M** | Tolerance | ±20% | | **RC** | Compliance | RoHS Compliant | --- ### 2. Key Technical Specifications While exact specifications can vary slightly by manufacturer, the **MLC20** series generally features the following parameters: * **Inductance:** 0.33 µH * **DC Resistance (DCR):** Very low (typically in the range of 15-25 mΩ) to minimize power loss. * **Saturation Current (Isat):** The current at which inductance drops by a specific percentage (usually 30%). For this size, it is typically around **4A to 6A**. * **Heat Rating Current (Irms):** The current that causes a specific temperature rise (usually 40°C). * **Operating Temperature:** Generally rated for **-40°C to +125°C**. --- ### 3. Construction and Material The "MLC" series typically uses **Metal Powder Core** technology: * **Molded Construction:** The coil is embedded in a metallic iron powder core. This provides excellent magnetic shielding and reduces "buzz" noise (acoustic noise). * **High Density:** This design allows for a higher current carrying capacity in a smaller footprint compared to traditional ferrite drum cores. --- ### 4. Common Applications Due to its small size and high efficiency, this inductor is found in: 1. **Smartphones and Tablets:** Powering CPU/GPU rails. 2. **Point of Load (POL) Converters:** Converting high voltage to low voltage for specific chips. 3. **SSD Drives:** Managing power in compact storage devices. 4. **Wearables:** Where PCB real estate is extremely limited. --- ### 5. Equivalent/Substitute Reference If you are looking for a replacement, ensure the footprint (2.0 x 1.6mm) and the saturation current match or exceed these values: ```markdown - TDK: SPM2016 series - Murata: DFE2016 series - Coilcraft: XEL2012 / PFL2015 series - Vishay: IHLP-1212 series ```