The part number **DM05EC100DO3-ST-R02** refers to a high-precision **Mica Capacitor** manufactured by CDE (Cornell Dubilier Electronics). These capacitors are renowned for their stability, high reliability, and low loss at high frequencies. --- ### 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Capacitance** | 10 pF (Picofarads) | | **Tolerance** | ±0.5 pF (indicated by the "D" code) | | **Voltage Rating** | 300V or 500V (Standard for DM05 series) | | **Dielectric Material** | Silver Mica | | **Operating Temperature** | -55°C to +125°C | | **Termination Style** | Radial Leaded | | **Case Size** | DM05 (Miniature size) | --- ### 2. Detailed Breakdown of Part Number * **DM05**: Represents the physical size and style (Miniature Radial Mica). * **EC**: Temperature coefficient and dielectric characteristic code. * **100**: The capacitance value (10 with 0 zeros = 10pF). * **D**: Tolerance code (±0.5pF). * **O3**: Voltage rating indicator. * **ST**: Special internal processing or lead style (Straight leads). * **R02**: RoHS compliance and packaging revision. --- ### 3. Key Characteristics * **High Stability:** Mica capacitors have extremely low capacitance drift over time and temperature. * **Low Dissipation:** They exhibit a very high Q factor, making them ideal for RF (Radio Frequency) applications. * **Precision:** The "D" tolerance (±0.5pF) ensures the part is highly accurate for tuning circuits. * **Durability:** Mica is chemically inert and does not age like ceramic or electrolytic dielectrics. --- ### 4. Typical Applications 1. **RF Oscillators:** Used in high-frequency signal generation where frequency stability is critical. 2. **Filter Networks:** Essential for band-pass and low-pass filters in telecommunications. 3. **Snubber Circuits:** Used in high-voltage pulse applications due to their ability to handle dV/dt stress. 4. **Calibration Equipment:** Employed in laboratory instruments requiring precise capacitance standards.