The part number **04023K8R2ABSTR** refers to a high-frequency, thin-film surface mount capacitor manufactured by **Kyocera AVX**. This component is specifically designed for RF (Radio Frequency) and microwave applications where precision and stability are critical. --- ### 1. Part Number Breakdown Understanding each character in the part number reveals the technical specifications: | Code Segment | Property | Description | | :--- | :--- | :--- | | **0402** | Case Size | 0.04" x 0.02" (Standard imperial size) | | **3** | Rated Voltage | 25 Volts DC | | **K** | Dielectric/Series | Accu-P® (High-accuracy thin-film technology) | | **8R2** | Capacitance | 8.2 pF (Picofarads) | | **A** | Capacitance Tolerance | ±0.05 pF (Ultra-tight tolerance) | | **B** | Termination | Nickel/Solder Coated (Sn/Pb) | | **S** | Test Selection | Standard Testing | | **TR** | Packaging | Tape & Reel | --- ### 2. Key Technical Specifications The **Accu-P®** series is known for its high performance compared to standard ceramic capacitors (MLCCs). * **Capacitance:** 8.2 pF * **Tolerance:** ±0.05 pF (Extremely precise) * **Working Voltage (WVDC):** 25V * **Operating Temperature:** -55°C to +125°C * **Q-Factor:** High Q (Low loss at high frequencies) * **SRF (Self Resonant Frequency):** Very high, making it suitable for GHz-range applications. --- ### 3. Core Features and Applications Unlike standard capacitors that are made by layering ceramic, this part is made using **Thin-Film Technology**. This allows for much tighter control over the physical dimensions and electrical characteristics. #### Why use this part? 1. **Low ESR/ESL:** It has very low Equivalent Series Resistance and Inductance, minimizing signal distortion. 2. **Stability:** The capacitance remains stable across varying temperatures and frequencies. 3. **Accuracy:** The ±0.05 pF tolerance is necessary for tuning circuits where even a tiny deviation can shift the frequency. #### Typical Applications * **Mobile Communications:** Base stations, smartphones, and GPS. * **Satellite TV:** LNBs (Low Noise Block downconverters). * **Filters:** Band-pass and low-pass RF filters. * **Matching Networks:** Impedance matching for power amplifiers. --- ### 4. Footprint and Mounting The **0402** package is extremely small, requiring automated Pick-and-Place machinery for assembly. ```text Dimensions (approximate): Length: 1.00mm ± 0.10mm Width: 0.50mm ± 0.10mm Height: 0.40mm ± 0.10mm ``` ---