The part number **47LAC-101R-R/Q** corresponds to a specialized electronic component, typically classified as a **High-Q Chip Inductor** or a specialized **RF Inductor**. These components are designed for high-frequency applications where low loss and high stability are critical. --- ### 1. Component Specifications Below is a breakdown of the typical technical parameters associated with this series: | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 100 nH (indicated by "101") | | **Tolerance** | ±5% or ±10% (Common for R-grade) | | **Q Factor** | High Q (Optimized for low energy loss) | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **Operating Temp** | -40°C to +125°C | | **Termination** | RoHS Compliant (Lead-free) | --- ### 2. Part Number Breakdown While naming conventions vary slightly by manufacturer, the code generally follows this logic: * **47L**: Represents the series identifier (often related to wire-wound or ceramic core technology). * **AC**: Refers to the physical size or material composition (e.g., Alumina Ceramic). * **101**: The inductance value. The first two digits (10) are significant, and the third (1) is the multiplier ($10 \times 10^1 = 100\text{ nH}$). * **R**: Denotes the tolerance or specific electrical characteristic. * **-R/Q**: Usually indicates "RoHS Compliant" and "High Q" (Quality Factor) rating. --- ### 3. Key Applications Because of the High-Q rating, these parts are found in circuits that require precision and minimal signal attenuation: 1. **RF Matching Networks**: Used to match impedance between antennas and transceivers. 2. **Filter Circuits**: Low-pass, high-pass, or band-pass filters in wireless communication. 3. **VCOs**: Voltage Controlled Oscillators where frequency stability is paramount. 4. **Bluetooth/WLAN**: High-frequency modules for consumer electronics. --- ### 4. Technical Considerations When integrating this part into a PCB design, keep the following in mind: ```markdown * Self-Resonant Frequency (SRF): Ensure the operating frequency is well below the SRF. * DC Resistance (DCR): High DCR can lead to unwanted heat and power loss. * Parasitic Capacitance: In RF designs, the layout must minimize stray capacitance around the inductor pads. ``` ---