The **MLC10-R12M-RC** is a high-performance, surface-mount (SMD) power inductor commonly used in voltage regulator modules (VRMs) and high-current power supplies. It belongs to a class of "molded" inductors known for their stability and compact size. --- ### 1. Part Number Breakdown The part number typically follows a specific nomenclature used by manufacturers like **Mag.Layers** or similar magnetic component specialists: | Segment | Meaning | Description | | :--- | :--- | :--- | | **MLC** | Series Code | Molded Low-profile Choke / Inductor series. | | **10** | Size Code | Dimensions (approx. 10mm x 10mm footprint). | | **R12** | Inductance Value | **0.12 µH** (R denotes the decimal point). | | **M** | Tolerance | **±20%** tolerance on the inductance value. | | **RC** | Compliance | RoHS Compliant. | --- ### 2. Key Technical Specifications Based on standard industry data for the 10-R12 series, here are the typical electrical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.12 µH | | **DC Resistance (DCR) Max** | ~0.50 mΩ to 0.80 mΩ | | **Saturation Current ($I_{sat}$)** | ~50A to 65A (High current handling) | | **Heating Current ($I_{rms}$)** | ~30A to 40A | | **Operating Temperature** | -40°C to +125°C | | **Construction** | Metal alloy powder (Molded) | --- ### 3. Core Features & Benefits * **High Saturation:** Because it uses a metal alloy powder core, it exhibits a "soft saturation" curve, meaning the inductance doesn't drop off abruptly when current increases. * **Low DCR:** The use of flat wire or heavy gauge copper ensures minimal power loss through heat (high efficiency). * **Shielded Design:** The molded construction provides inherent magnetic shielding, reducing Electromagnetic Interference (EMI) with surrounding components. * **Mechanical Strength:** The solid molded body offers excellent resistance to thermal shock and mechanical vibration. --- ### 4. Common Applications Due to its very low inductance (0.12 µH) and extremely high current capability, this part is used in: 1. **CPU/GPU Power Supplies:** Multi-phase VRMs for modern processors. 2. **DC-DC Converters:** High-frequency point-of-load (POL) regulators. 3. **Servers/Networking:** High-density power modules where space is limited but power demand is high. ---