The **LSWM-453232-R39M-T** is a specific part number for a Surface Mount Device (SMD) Wire-wound Chip Inductor. This component is typically used in power management and signal filtering circuits. ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics of the component: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | `LSWM` | Low profile, wire-wound type magnetic shielded/unshielded inductor. | | **Dimensions** | `453232` | Metric size: 4.5mm x 3.2mm x 3.2mm (EIA 1812 equivalent). | | **Inductance** | `R39` | Inductance value: **0.39 µH** (R denotes decimal point). | | **Tolerance** | `M` | Tolerance level: **±20%**. | | **Packaging** | `T` | Tape and Reel packaging for automated SMT assembly. | --- ### 2. Key Technical Specifications While exact values can vary slightly by manufacturer (often Taiyo Yuden, Chilisin, or similar high-reliability brands), the standard specifications for an 1812-sized R39M inductor are: * **Inductance:** 0.39 Microhenries (µH). * **Operating Temperature:** Typically -40°C to +125°C. * **DC Resistance (DCR):** Usually very low (in the milliohm range) to minimize power loss. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by a specified percentage (e.g., 30%). * **Rated Current ($I_{rms}$):** The maximum continuous current the part can handle before a specific temperature rise (usually 40°C). --- ### 3. Construction and Features * **Wire-wound Core:** Features a wire coiled around a ceramic or ferrite core. This construction allows for higher current handling and lower DCR compared to multilayer inductors. * **SMD Design:** The flat top and rectangular shape are optimized for high-speed "pick and place" robotic assembly. * **Magnetic Properties:** Depending on the specific sub-series, these are often designed to minimize electromagnetic interference (EMI). --- ### 4. Common Applications This part is commonly found in the following electronic sectors: 1. **DC-DC Converters:** Used for energy storage and voltage regulation in power modules. 2. **Consumer Electronics:** Found in smartphones, tablets, and laptops for power rail filtering. 3. **Communication Equipment:** Used in base stations and networking hardware to suppress high-frequency noise. 4. **Automotive Infotainment:** Employed in non-safety critical electronic control units (ECUs). ---