Based on the part number **DM15CA151JO3-RHR02**, this component is a **Silver Mica Capacitor**. These are high-precision, high-stability capacitors typically used in RF (Radio Frequency) applications, oscillators, and tuned circuits. ### Part Number Breakdown The part number follows the standard coding for Cornell Dubilier (CDE) or similar manufacturers of Mica capacitors: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | DM15 | Case size (Standard dipped mica, approx. 11.4 x 11.4 mm) | | **Temp. Coeff.** | CA | Temperature coefficient range (usually -20 to +100 ppm/°C) | | **Capacitance** | 151 | 150 pF (15 followed by one zero) | | **Tolerance** | J | ±5% | | **Voltage** | O3 | 500V DC (Standard rating for DM15) | | **Operating Temp** | RHR02 | Specific manufacturing/packaging or ROHS compliant code | --- ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **Capacitance** | 150 pF | | **Tolerance** | ±5% | | **Voltage Rating** | 500 VDC | | **Dielectric Material** | Silver Mica | | **Case Type** | Dipped Phenolic | | **Terminal Type** | Radial Leads | --- ### Key Features and Applications Silver Mica capacitors are preferred in professional electronics due to their unique properties: * **High Stability:** They exhibit very little change in capacitance over time or varying voltages. * **Low Loss:** They have a very high Q factor (low ESR), making them ideal for high-frequency filters. * **Temperature Resistance:** They operate reliably across a wide temperature range (typically -55°C to +125°C or +150°C). * **Common Uses:** * RF transmitters and receivers. * Oscillator circuits (where frequency drift must be minimized). * Pulse-forming networks. * High-voltage decoupling. ---