The part number **04023J8R2ABSTR\500** refers to a high-precision surface-mount capacitor, specifically a **Thin-Film Accu-P® capacitor** manufactured by KYOCERA AVX. These components are designed for high-frequency applications where stability and low loss are critical. ### 1. Part Number Breakdown The alphanumeric string follows a specific coding system used by AVX: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Size** | 0402 | EIA Case Size (0.04 x 0.02 inches / 1.0 x 0.5 mm) | | **Voltage** | 3 | 25 Volts DC | | **Dielectric** | J | Silicon Dioxide / Silicon Nitride (Thin Film) | | **Capacitance** | 8R2 | 8.2 Picofarads (pF) | | **Tolerance** | A | ±0.05 pF (Ultra-tight tolerance) | | **Termination** | B | Nickel / Solder Coated (SnPb or Lead-Free depending on series) | | **Packaging** | STR\500 | Standard Tape & Reel (500 pieces) | --- ### 2. Key Specifications This component is highly specialized for RF (Radio Frequency) circuits. * **Capacitance:** 8.2 pF * **Tolerance:** ±0.05 pF (This is an extremely precise value, common in high-end tuning circuits). * **Rated Voltage:** 25V DC * **Operating Temperature:** -55°C to +125°C * **Quality Factor (Q):** High Q, meaning very low energy loss at high frequencies (GHz range). * **SRF (Self-Resonant Frequency):** Typically very high, making it suitable for microwave and satellite communication. --- ### 3. Applications Because of its thin-film construction and ultra-tight tolerance, this part is used in: 1. **Mobile Communications:** Smartphones and base stations. 2. **Satellite Receivers:** Low Noise Block (LNB) converters. 3. **Matching Networks:** Impedance matching for power amplifiers. 4. **Filters:** Bandpass and lowpass filters in the GHz frequency spectrum. ### 4. Comparison: Thin Film vs. Standard MLCC | Feature | Thin Film (Accu-P) | Standard MLCC (C0G/NP0) | | :--- | :--- | :--- | | **Precision** | Extremely High (±0.01 pF available) | Moderate (±5%) | | **Stability** | Excellent over Temp/Voltage | Good | | **Frequency** | Optimized for >1 GHz | Good up to ~500 MHz | | **Cost** | Higher | Lower | ---