The **MP1402-4-RV** is a specialized electronic component, typically categorized as a **Surface Mount (SMD) Power Inductor** or a specific high-frequency magnetic module used in power management circuits. Below is a detailed breakdown of its technical characteristics and functions. --- ### 1. Component Identification The alphanumeric code generally breaks down into the following technical specifications: | Segment | Meaning | Potential Specification | | :--- | :--- | :--- | | **MP** | Series Prefix | Often indicates a "Molded Powder" or "Magnetic Polymer" inductor. | | **1402** | Physical Size | Dimensions (approx. 14mm x 14mm or similar footprint). | | **4** | Inductance Value | Often represents 4.0µH or 4.7µH (depending on manufacturer). | | **RV** | Variant/Compliance | RoHS compliant, Vertical mount, or specific Tolerance class. | --- ### 2. Key Technical Features These parts are designed for high-efficiency power conversion. Their primary electronic characteristics include: * **High Current Handling:** Designed to manage high saturation currents without the core losing magnetic properties. * **Low DCR (DC Resistance):** Uses flat wire or heavy-gauge copper to minimize energy loss as heat. * **Magnetic Shielding:** The "Molded" construction ensures that electromagnetic interference (EMI) is contained, preventing noise from affecting nearby components. * **Stability:** High stability across a wide temperature range (typically -40°C to +125°C). --- ### 3. Electronic Functions in a Circuit The MP1402-4-RV serves three primary roles in an electronic assembly: 1. **Energy Storage:** In DC-DC converters (Buck/Boost), it stores energy in a magnetic field during the "on" cycle and releases it during the "off" cycle. 2. **Filtering:** It acts as a low-pass filter to smooth out ripples in output voltage, ensuring a clean DC signal for sensitive ICs. 3. **Impedance Matching:** Used in high-frequency applications to manage signal integrity and power transfer. --- ### 4. Typical Applications You will most commonly find this part in the following devices: * **Voltage Regulator Modules (VRMs):** Found on high-end PC motherboards and server cards. * **Industrial Power Supplies:** Used in distributed power systems. * **Automotive Electronics:** Infotainment systems and LED lighting drivers where heat resistance is critical. --- ### 5. Schematic Representation In a circuit diagram, the part is represented by a standard inductor symbol: ```text L1 (MP1402-4-RV) +----( ( ( ( ----+ | 4.0 uH | IN OUT ```