The part number **DM05CD151JO3-RHR02** refers to a high-precision, high-reliability **Silver Mica Capacitor**. These components are frequently used in RF (Radio Frequency) circuits and precision timing applications due to their exceptional stability. --- ### 1. Technical Specifications Below are the primary electrical characteristics for this specific component: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 150 pF (Picofarads) | | **Tolerance** | ±5% (indicated by 'J') | | **Voltage Rating** | 500V DC | | **Dielectric Material** | Silver Mica | | **Operating Temperature** | -55°C to +125°C | | **Termination** | Standard Lead (Radial) | --- ### 2. Breakdown of Part Number Attributes The alphanumeric string follows a specific coding standard for mica capacitors: * **DM05:** Refers to the physical case size and style (typically a small, dipped radial package). * **CD:** Indicates the characteristic code (temperature coefficient and drift limits). * **151:** The capacitance code. `15` followed by `1` zero = 150. * **J:** The tolerance code (J = ±5%). * **O3:** Typically refers to the voltage rating (O3 often signifies 500V in specific manufacturer catalogs). * **RHR02:** Usually a manufacturer-specific suffix denoting high reliability (HR) and RoHS compliance or specific packaging requirements. --- ### 3. Key Advantages Mica capacitors are chosen over ceramic or electrolytic types for specific reasons: 1. **High Precision:** They offer very low capacitance drift over time. 2. **Temperature Stability:** The capacitance remains extremely steady even as temperatures fluctuate. 3. **Low Loss (High Q):** They have a very high "Quality Factor," meaning they have very low internal resistance at high frequencies. 4. **Voltage Resistance:** They can handle high voltages relative to their small physical size. --- ### 4. Common Applications * **RF Oscillators:** Used to maintain a stable frequency. * **Tuning Circuits:** Found in radio transmitters and receivers. * **Filter Networks:** Used in high-fidelity audio or signal processing where phase shift must be minimized. * **Defense & Aerospace:** Utilized in environments where extreme reliability and longevity are required.