The part number **47LPA-142R-R** corresponds to a high-precision **Thin Film Chip Resistor Network** (specifically a Low Profile Attenuator). These components are critical in RF (Radio Frequency) and high-speed digital circuits where signal integrity and precise power reduction are required. --- ### 1. Technical Specifications Below are the typical specifications for the 47LPA series: | Property | Description | | :--- | :--- | | **Component Type** | Thin Film Chip Attenuator | | **Attenuation Value** | 2.0 dB (indicated by "2R") | | **Frequency Range** | DC to 20 GHz (Depending on package) | | **Impedance** | 50 Ohms (Standard) | | **Tolerance** | ±0.1 dB to ±0.5 dB | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Packaging** | Tape & Reel (indicated by final "-R") | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying the exact variant: * **47LPA**: The series designation (Low Profile Attenuator). * **142**: Physical size/case code (referencing dimensions, often similar to an 0402 or 0603 footprint depending on the manufacturer). * **R**: Decimal point placeholder for the value. * **2R**: Represents **2.0 dB** of attenuation. * **-R**: Indicates the packaging method (Tape and Reel). --- ### 3. Key Features * **High Precision**: Utilizing thin-film technology allows for extremely tight tolerances and stable performance across temperature fluctuations. * **Wide Bandwidth**: Designed to maintain a flat frequency response, making it suitable for microwave and satellite communication. * **Miniaturization**: The "Low Profile" aspect allows for integration into compact mobile devices or dense PCB layouts. * **Low Noise**: Unlike thick-film resistors, thin-film components provide significantly lower thermal noise. --- ### 4. Common Applications 1. **RF Signal Conditioning**: Reducing signal levels to prevent overloading sensitive receivers. 2. **Impedance Matching**: Improving the "return loss" between different stages of an RF circuit. 3. **Testing and Measurement**: Used in handheld signal analyzers and lab equipment. 4. **Telecommunications**: Base stations and high-speed networking hardware. ---