The **HPC042N-R56MTR** is a high-performance, surface-mount (SMD) power inductor. These components are critical in modern electronics for energy storage and noise filtering, particularly in high-current power supplies. ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics and physical dimensions. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.56 µH (indicated by "R56") | | **Tolerance** | ±20% (indicated by "M") | | **DCR (Direct Current Resistance)** | Typically very low (mΩ range) to minimize heat loss | | **Saturation Current ($I_{sat}$)** | High (typically >10A depending on specific series) | | **Dimensions** | 4.0 x 4.0 x 2.1 mm (Standard 4020/0420 size) | | **Package/Case** | Molded Power Inductor (Shielded) | --- ### 2. Key Features * **Molded Construction:** The inductor uses a metallic powder core molded around the coil. This design provides excellent magnetic shielding, reducing Electromagnetic Interference (EMI). * **High Current Handling:** Due to the composite core material, it can handle high peak currents without immediate magnetic saturation. * **Low Profile:** The "042" designation often refers to the small footprint and height, making it ideal for compact mobile devices. * **Temperature Stability:** Designed to operate efficiently across a wide temperature range (usually -40°C to +125°C). --- ### 3. Application Areas These inductors are primarily used in **DC-DC Converters** and **Voltage Regulator Modules (VRMs)**. Common applications include: 1. **Consumer Electronics:** Smartphones, tablets, and laptops. 2. **Computing:** Power stages for CPUs and GPUs where high efficiency and high switching frequencies are required. 3. **Automotive:** Infotainment systems and ADAS modules (if AEC-Q200 qualified). 4. **Industrial:** Distributed power systems and compact sensors. --- ### 4. Schematic Representation In a circuit diagram, the part is represented as an inductor, typically found near the switching IC in a Buck or Boost converter setup. ```spice * Typical Buck Converter Application Vin 1 0 DC 12V SW 1 2 S1 (Switching Node) L1 2 3 0.56uH ; <--- HPC042N-R56MTR Cout 3 0 22uF Rload 3 0 10 ```