The part number **04023K8R2ABTTR** refers to a high-frequency, high-precision surface-mount capacitor, typically manufactured by **AVX (now KYOCERA AVX)**. This specific part belongs to the **Accu-P®** series, which is designed for RF (Radio Frequency) and microwave applications. --- ### Part Number Breakdown The alphanumeric code provides specific details about the component's physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **0402** | Case Size | 0.04 x 0.02 inches (1.0 x 0.5 mm) | | **3** | Voltage | Rated for 25 Volts DC | | **K** | Dielectric | Accu-P (Thin Film Technology) | | **8R2** | Capacitance | 8.2 pF (Picofarads) | | **A** | Tolerance | ±0.05 pF (Ultra-tight tolerance) | | **B** | Termination | Nickel/Solder coated (Sn/Pb or Lead-free depending on suffix) | | **TT** | Taping | Tape & Reel (7" reel) | | **R** | RoHS | Standard compliance | --- ### Key Technical Specifications * **Technology:** Thin Film. Unlike standard ceramic capacitors (MLCCs), thin-film capacitors are created using a process similar to semiconductor manufacturing. This allows for extremely precise capacitance values and high stability. * **Operating Temperature:** Typically -55°C to +125°C. * **Q-Factor:** Extremely high Quality Factor (Q), meaning it has very low energy loss at high frequencies. * **SRF (Self-Resonant Frequency):** Very high, making it suitable for GHz-range applications. --- ### Common Applications Because of its high precision and low loss, this part is used in: 1. **Mobile Communications:** Matching networks in cellular base stations and smartphones. 2. **Satellite Systems:** Signal filtering and tuning. 3. **GPS/Navigation:** High-stability circuits for positioning data. 4. **RF Amplifiers:** Decoupling and DC blocking in high-frequency signal paths. --- ### Comparison: Thin-Film vs. Standard MLCC | Feature | Accu-P (Thin Film) | Standard MLCC (C0G/NP0) | | :--- | :--- | :--- | | **Tolerance** | Very Tight (down to ±0.01pF) | Moderate (typically ±5%) | | **Stability** | Excellent over freq/temp | Good | | **Cost** | Higher | Lower | | **Application** | Precision RF/Microwave | General Purpose/Filtering |