The part number **DM05CY151DO3-ST-R02** refers to a high-precision **Mica Capacitor**. These components are known for their exceptional stability, low loss, and reliability in high-frequency applications. --- ## 1. Technical Specifications Table Based on standard naming conventions for Silver Mica capacitors (typically manufactured by companies like Cornell Dubilier or CDE), here are the technical details: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Capacitance** | 150 pF | Indicated by "151" (15 followed by 1 zero) | | **Tolerance** | ±0.5% | Indicated by "D" | | **Voltage Rating** | 500V DC | Standard rating for DM05 series | | **Dielectric** | Silver Mica | High stability, low drift | | **Operating Temp** | -55°C to +125°C | Industrial/Military grade range | | **Case Style** | DM05 (Dipped) | Small resin-coated package | | **Termination** | Radial Leads | Through-hole mounting | --- ## 2. Key Features * **High Precision:** The "D" tolerance signifies ±0.5%, making it ideal for tuned circuits. * **Temperature Stability:** Mica capacitors have a very low temperature coefficient, meaning the capacitance remains steady despite heat fluctuations. * **Low Dissipation Factor:** They exhibit very low energy loss, which is critical for RF (Radio Frequency) applications. * **Voltage Handling:** Rated for 500V, providing a significant safety margin for standard electronic circuits. --- ## 3. Typical Applications * **RF Oscillators:** Used to set precise frequencies in radio transmitters and receivers. * **Filter Networks:** High-Q filters where sharp frequency cut-offs are required. * **Coupling/Decoupling:** In high-voltage environments where ceramic capacitors might be too unstable. * **Timing Circuits:** Where timing accuracy must remain constant over years of operation. --- ## 4. Part Number Breakdown (Estimated) * **DM05:** Case size/Series (Dipped Mica, Size 05). * **CY:** Characteristic (usually relates to temperature coefficient). * **151:** Capacitance code (150 picofarads). * **D:** Tolerance (±0.5%). * **O3:** Voltage code (often maps to 500V in this series). * **ST-R02:** Packaging/Revision suffix (e.g., Taped & Reeled or RoHS compliance).