The **47LPA-150B-R** is a specific electronic component typically categorized as a **Low Profile, High-Current Power Inductor**. These parts are commonly used in power management circuits, such as DC-DC converters and voltage regulator modules (VRMs). Below is a breakdown of its technical specifications, construction, and applications. --- ### 1. Technical Specifications The part number usually follows a standardized nomenclature representing its electrical characteristics. | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 15.0 µH | The nominal inductance value (represented by "150"). | | **Tolerance** | ±20% | The standard variation range for inductance. | | **Current Rating (Isat)** | ~1.5A - 2.5A | Saturation current (varies slightly by manufacturer). | | **DCR (DC Resistance)** | Low | Designed for high efficiency and low heat dissipation. | | **Mounting Type** | SMD / SMT | Surface Mount Technology for automated PCB assembly. | | **Operating Temp** | -40°C to +125°C | Standard industrial temperature range. | --- ### 2. Component Construction The "LPA" series typically denotes a **Low Profile Shielded Inductor**. * **Magnetic Shielding:** The part is magnetically shielded to minimize Electromagnetic Interference (EMI), which is crucial for preventing noise in sensitive nearby circuits. * **Core Material:** Usually features a ferrite core or a composite metal powder core to handle high frequencies without significant core losses. * **Form Factor:** The "47" often refers to the physical footprint (e.g., 4.0mm x 4.0mm or similar metric sizing depending on the specific vendor series). --- ### 3. Key Applications These inductors are designed for compact electronic devices where vertical space is limited. * **Mobile Devices:** Smartphones, tablets, and wearables. * **Power Supplies:** Buck/Boost converters used in battery-operated devices. * **Storage Devices:** SSDs (Solid State Drives) and HDD controller boards. * **Consumer Electronics:** Digital cameras and portable gaming consoles. --- ### 4. Part Number Decoding (Typical) | Segment | Meaning | | :--- | :--- | | **47** | Series Size (Physical Dimensions) | | **LPA** | Low Profile / Shielded Type | | **150** | Inductance Code (15 followed by 0 zeros = 15.0 µH) | | **B** | Tolerance/Packaging Code | | **R** | RoHS Compliant / Lead-Free |