The part number **04023J8R2ABSTR** refers to a high-precision Thin Film Capacitor manufactured by **KYOCERA AVX**. These components are specifically engineered for high-frequency applications where stability and low loss are critical. ### 1. Part Number Breakdown To understand the specifications, we can decode the alphanumeric string: | Segment | Value | Description | | :--- | :--- | :--- | | **0402** | Case Size | Surface Mount Device (SMD) size 0.4mm x 0.2mm (01005 metric approx). | | **3** | Voltage | Rated at 25 Volts. | | **J** | Technology | Silicon Dioxide (SiO2) Thin Film technology (Accu-P series). | | **8R2** | Capacitance | 8.2 Pico-Farads (pF). The 'R' acts as a decimal point. | | **A** | Tolerance | Tight tolerance of ±0.05 pF. | | **B** | Termination | Nickel/Solder overcoat (Standard). | | **STR** | Packaging | Tape and Reel (Standard 7" reel). | --- ### 2. Key Technical Specifications The **Accu-P** series from AVX is known for its high "Q" factor and low Equivalent Series Resistance (ESR). * **Capacitance:** 8.2 pF * **Voltage Rating:** 25V DC * **Operating Temperature:** -55°C to +125°C * **Tolerance:** Extreme precision (±0.05 pF) * **Dielectric Material:** Silicon Dioxide (SiO2) * **Mounting Type:** Surface Mount (SMT) --- ### 3. Application Areas Because of the thin-film construction, these capacitors exhibit very low parasitic inductance and high self-resonant frequencies (SRF). They are typically used in: 1. **RF Circuits:** Matching networks and filters in wireless communication. 2. **Mobile Devices:** Smartphones and tablets requiring miniaturized, stable components. 3. **Satellite Communications:** Systems where signal integrity and low noise are paramount. 4. **VCOs:** Voltage Controlled Oscillators requiring tight capacitance stability. --- ### 4. Comparison: Thin Film vs. Standard MLCC | Feature | Thin Film (04023J...) | Standard MLCC (C0G/NP0) | | :--- | :--- | :--- | | **Precision** | Very High (±0.05pF) | Moderate (±5%) | | **Stability** | Excellent over frequency | Good | | **SRF** | Higher | Lower | | **Cost** | Premium | Economical |