The part number **DM19FA151JO3-SA-R02** refers to a high-precision **Mica Capacitor** manufactured by Cornell Dubilier (CDE). These capacitors are renowned for their stability, high reliability, and ability to handle high frequencies. --- ### 1. Technical Specifications | Parameter | Specification | |:---|:---| | **Capacitance** | 150 pF (Picofarads) | | **Tolerance** | ±5% (indicated by 'J') | | **Voltage Rating** | 100 VDC (Standard for DM19 series) | | **Dielectric Type** | Silver Mica | | **Operating Temperature** | -55°C to +125°C | | **Termination Style** | Radial Leads (Through-Hole) | --- ### 2. Component Characteristics The DM19 series is specifically designed for military and high-performance industrial applications. Key features include: * **Silver Mica Dielectric:** Provides excellent temperature stability and a low temperature coefficient. * **Low Loss:** These capacitors exhibit extremely low Dissipation Factor (DF), making them efficient in RF (Radio Frequency) circuits. * **Durability:** The epoxy coating (often brown or dark red) protects the internal silver mica layers from moisture and mechanical shock. * **High Q Factor:** Ideal for resonant circuits where signal purity is critical. --- ### 3. Applications Due to its precise capacitance and stability, this part is commonly found in: 1. **RF Oscillators:** Maintaining frequency stability despite temperature changes. 2. **Transmitters/Receivers:** Used in tuning circuits and filters. 3. **Pulse Circuits:** Handling high dV/dt (rapid voltage changes) without degradation. 4. **Audio Equipment:** Used in high-end audio filters where low distortion is required. --- ### 4. Part Number Breakdown (Partial) * **DM:** Standard dipped mica capacitor series. * **19:** Case size (Standard large format). * **FA:** Voltage/Characteristic code. * **151:** Capacitance code (15 followed by one zero = 150pF). * **J:** Tolerance (±5%). * **O3:** Voltage designator (O3 = 100V).