The part number **DM05EE151JO3-SA-R02** corresponds to a high-precision **Mica Capacitor** manufactured by **Cornell Dubilier (CDE)**. These capacitors are known for their extreme stability, high reliability, and low loss at high frequencies. --- ## 1. Technical Specifications Below is a breakdown of the electrical and physical characteristics of this specific component: | Feature | 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** | Radial Leads (Standard Dip) | | **Case Type** | DM05 (Miniature size) | --- ## 2. Deciphering the Part Number The alphanumeric string follows the standard CDE (Cornell Dubilier) coding convention: * **DM05**: Represents the case size/style (Miniature dipped mica). * **EE**: Indicates the characteristic/temperature coefficient (Standard stability). * **151**: The capacitance code. `15` followed by `1` zero = 150. * **J**: The tolerance code (J = ±5%). * **O3**: The voltage rating code (O3 usually denotes 500V). * **SA-R02**: Packaging or internal manufacturing revision codes (often referring to lead spacing or RoHS compliance status). --- ## 3. Key Advantages of Mica Capacitors Mica capacitors like the DM05 series are chosen over ceramic or electrolytic types for specific reasons: 1. **Low Dissipation Factor:** They exhibit very low loss, making them ideal for RF (Radio Frequency) oscillators and filters. 2. **High Stability:** The capacitance value remains remarkably constant despite changes in temperature, voltage, or time. 3. **High Di-electric Strength:** They can handle high voltages (500V) in a very small physical footprint. 4. **Tight Tolerance:** Unlike general-purpose ceramics, mica capacitors are easily produced with precise values. --- ## 4. Typical Applications * **Radio Frequency (RF) Circuits:** Used in transmitters and receivers for tuning. * **Pulse Circuits:** High-speed switching where low inductance is required. * **Oscillators:** Ensuring frequency stability in clock circuits. * **Filtering:** High-Q filters where signal purity is critical.