The **LSW-0805-R82K-T** is a surface-mount (SMD) wire-wound ceramic chip inductor. These components are primarily used in high-frequency circuits for filtering, impedance matching, and resonance. --- ### 1. Part Number Breakdown Understanding the alphanumeric code reveals the specific characteristics of the component: | Segment | Meaning | Value / Description | | :--- | :--- | :--- | | **LSW** | Series Code | Wire-wound Inductor (Standard Type) | | **0805** | Case Size | 0805 Imperial (approx. 2.0 x 1.2 mm) | | **R82** | Inductance Value | 0.82 Microhenries ($\mu$H) or 820nH | | **K** | Tolerance | ±10% | | **T** | Packaging | Tape & Reel | --- ### 2. Technical Specifications The typical electrical profile for an inductor with this part number (based on industry standards for 0805 wire-wound inductors) is as follows: * **Inductance:** $0.82 \mu\text{H}$ (at a test frequency of 25.2 MHz). * **Quality Factor (Q):** Typically $>25$ to $45$ (varies by manufacturer). * **SRF (Self-Resonant Frequency):** Approx. $350 - 450 \text{ MHz}$. * **DC Resistance (DCR):** Usually in the range of $0.5$ to $1.2 \Omega$. * **Rated Current:** Typically $200 - 400 \text{ mA}$ (max). * **Operating Temperature:** $-40^\circ\text{C}$ to $+125^\circ\text{C}$. --- ### 3. Key Features and Construction * **Wire-Wound Core:** Uses a ceramic core with a copper wire wound around it. This provides a much higher "Q" factor (efficiency) compared to multilayer ceramic inductors. * **Ceramic Body:** Offers excellent thermal stability and low loss at high frequencies. * **High SRF:** The physical design allows it to function as an inductor at much higher frequencies before it becomes capacitive. --- ### 4. Common Applications This specific value ($0.82 \mu\text{H}$) is frequently used in: 1. **RF Circuits:** Matching networks for antennas in Bluetooth or Wi-Fi modules. 2. **Filtering:** LC filters for noise suppression in communication equipment. 3. **Signal Conditioning:** Decoupling and isolation in high-speed data lines. ---