The **LSWM-453232-R39K-T** is a surface-mount (SMD) wire-wound chip inductor. These components are primarily used in high-frequency circuits for signal filtering and impedance matching. Below is a detailed breakdown of its specifications and electronic characteristics. --- ### 1. Part Number Breakdown The alphanumeric code follows a standard industry format for inductive components: | Segment | Meaning | Description | | :--- | :--- | :--- | | **LSWM** | Series Type | Wire-wound chip inductor (often indicates high Q factor). | | **453232** | Case Size | Dimensions: 4.5mm x 3.2mm x 3.2mm (Metric 4532 / EIA 1812). | | **R39** | Inductance Value | **0.39 µH** (R acts as a decimal point). | | **K** | Tolerance | **±10%** (Standard tolerance for power/signal inductors). | | **T** | Packaging | **Tape & Reel** (Standard for automated SMT assembly). | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer (such as Taiyo Yuden or Bourns equivalents), the general parameters for a 0.39 µH 1812 inductor are: * **Inductance:** 0.39 µH * **DC Resistance (DCR):** Typically low (approx. 0.20Ω to 0.45Ω), allowing for efficient power flow. * **Rated Current (Idc):** Usually ranges between 450mA and 800mA. * **Self-Resonant Frequency (SRF):** High (often > 250 MHz), making it suitable for high-frequency filtering. * **Operating Temperature:** Generally -40°C to +125°C. --- ### 3. Key Electronic Functions The LSWM-453232-R39K-T serves three primary roles in electronic design: 1. **Filtering:** It blocks high-frequency noise while allowing DC and low-frequency signals to pass (Low Pass Filter). 2. **Energy Storage:** In small DC-DC converters, it stores energy in its magnetic field during the switching cycle. 3. **Impedance Matching:** Used in RF (Radio Frequency) stages to ensure maximum power transfer between different circuit sections. --- ### 4. Typical Applications * **Power Supplies:** Decoupling and noise suppression in switching regulators. * **Telecommunications:** Signal processing in modems and routers. * **Consumer Electronics:** Used in TVs, game consoles, and computer peripherals. * **Automotive:** Infotainment systems and sensor modules.