The **47LAC-202G-R** is a specific electronic component, typically categorized as a **Resistor Network** or a **Thick Film Chip Resistor Array**. These components are designed to integrate multiple resistors into a single package to save space on a Printed Circuit Board (PCB). --- ### 1. Component Overview The part number follows a standard nomenclature used by manufacturers (often associated with brands like Walsin or similar passive component specialists). | Feature | Specification | | :--- | :--- | | **Component Type** | Thick Film Resistor Array | | **Circuit Type** | Isolated or Common Terminal (typically 4 isolated resistors) | | **Resistance Value** | 2.0 kΩ (indicated by "202") | | **Tolerance** | ±2% (indicated by "G") | | **Termination** | Lead-free / RoHS Compliant (indicated by "R") | --- ### 2. Breakdown of the Part Number To understand the technical characteristics, we can decode the alphanumeric string: * **47L**: Usually refers to the series and physical size (often 0603 or 1206 footprint depending on the manufacturer's catalog). * **AC**: Designates the configuration (e.g., concave or convex terminations). * **202**: The resistance code. * `20` = The first two significant digits. * `2` = The multiplier (10 to the power of 2). * *Calculation:* $20 \times 10^2 = 2,000$ Ohms ($2k\Omega$). * **G**: The tolerance code. * `G` = ±2%. * **R**: Packaging or RoHS status. * `R` = Taped & Reeled / RoHS compliant. --- ### 3. Key Technical Advantages Using a resistor array like the 47LAC-202G-R instead of individual discrete resistors offers several benefits: 1. **Space Efficiency:** Reduces the total area occupied on the PCB compared to four individual 0603 resistors. 2. **Assembly Speed:** Pick-and-place machines can mount one component instead of four, increasing production throughput. 3. **Cost Reduction:** Lowers the BOM (Bill of Materials) count and handling costs. 4. **Tracking:** Because the resistors are on the same substrate, they exhibit similar temperature coefficients, leading to better thermal tracking. --- ### 4. Common Applications * **Pull-up/Pull-down Resistors:** Used for digital I/O lines or data buses. * **Damping Resistors:** Placed in series with high-speed data lines to reduce signal reflection. * **LED Current Limiting:** Driving multiple LEDs in a display or indicator panel.