The **MLC10-R33M-RC** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converters and high-frequency power supplies. It belongs to a class of "Molded Power Inductors" known for their stability and compact footprint. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's specifications: | Code | Segment | Description | | :--- | :--- | :--- | | **MLC** | Series | Molded Power Inductor Series (High Current) | | **10** | Size Code | Physical dimensions (approx. 10mm x 11.5mm) | | **R33** | Inductance Value | **0.33 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** | | **RC** | Compliance | RoHS Compliant | --- ### 2. Technical Specifications Below are the typical electrical characteristics for this specific part: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | ~0.8 to 1.3 mΩ (Typical) | | **Isat (Saturation Current)** | ~40A to 50A (Drops Inductance by 20-30%) | | **Irms (Heating Current)** | ~25A to 35A (Causes 40°C temp rise) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Electronic Features * **Molded Construction:** The coil is encapsulated in a magnetic metal powder. This design provides excellent magnetic shielding and reduces audible "buzzing" (acoustic noise). * **High Saturation:** Unlike ferrite core inductors, these have a "soft saturation" curve, meaning they don't lose all inductance instantly when the current limit is exceeded. * **Low DCR:** The extremely low resistance minimizes power loss and heat generation, making it highly efficient for high-current applications. * **Shielded Design:** The molded body acts as a natural shield, reducing Electromagnetic Interference (EMI) with neighboring components on the PCB. --- ### 4. Common Applications This inductor is typically found in: * **Voltage Regulator Modules (VRMs):** Used in motherboards and GPU power phases. * **DC-DC Converters:** Point-of-Load (POL) power supplies for telecommunications. * **Battery Powered Systems:** Where high efficiency and low profile are required. * **Servers/Data Centers:** High-density power modules.