The part number **DM05DC102DO3-SA-R02** typically refers to a high-voltage, high-precision mica capacitor, often manufactured by companies like **CDE (Cornell Dubilier)** or similar specialist electronic component firms. These are designed for stability and reliability in RF (Radio Frequency) and high-voltage circuits. --- ### 1. Component Specifications Based on the standardized coding for this series, here is the breakdown of its technical characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Capacitance** | 1000 pF (1nF) | Represented by the "102" code (10 x 10^2). | | **Tolerance** | ±0.5% or ±1% | The "D" or "F" codes usually indicate high precision. | | **Voltage Rating** | 500V DC | Standard rating for the DM05 series housing. | | **Dielectric** | Silver Mica | Known for extreme stability over time and temperature. | | **Case Size** | DM05 / Miniature | A compact dipped mica package. | | **Operating Temp** | -55°C to +125°C | Designed for harsh environments. | --- ### 2. Key Features * **Low Dissipation Factor:** High efficiency in high-frequency applications. * **Temperature Stability:** Mica capacitors have a very low temperature coefficient, meaning their capacitance does not change significantly with heat. * **Excellent RF Performance:** They exhibit low inductance and are ideal for power amplifiers and transmitters. * **Durability:** The "SA-R02" suffix often denotes specific lead forming (straight or crimped) and RoHS compliance (lead-free). --- ### 3. Common Applications Due to its high precision and voltage handling, this part is commonly used in: 1. **RF Oscillators:** Maintaining frequency stability. 2. **Filter Circuits:** Precise tuning in communication equipment. 3. **Medical Electronics:** High-voltage imaging or surgical equipment. 4. **Military/Aerospace:** Guidance systems and high-reliability radios. --- ### 4. Visual Identification * **Package Type:** Dipped (epoxy coated) radial leads. * **Marking:** Usually marked with the capacitance value, tolerance letter, and voltage rating on the side of the component body.