## Component Analysis: DM05CY151JO3-SA-R02 The part number **DM05CY151JO3-SA-R02** refers to a high-precision **Mica Capacitor**. These components are known for their exceptional stability, low loss, and reliability in RF (Radio Frequency) and precision timing circuits. --- ### 1. Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Capacitance** | 150 pF | Indicated by code "151" (15 * 10^1) | | **Tolerance** | ±5% | Indicated by "J" | | **Voltage Rating** | 300V - 500V DC | Standard for DM05 series | | **Dielectric Material** | Silver Mica | Provides excellent temperature stability | | **Case Style** | DM05 (Dipped) | Small footprint radial leaded package | | **Operating Temp** | -55°C to +125°C | Military/Industrial grade range | --- ### 2. Part Number Breakdown To understand the specific characteristics, we can decode the nomenclature: 1. **DM05**: The physical size and style. "DM" stands for Dipped Mica, and "05" is the case size (approx. 11.4mm x 9.1mm). 2. **CY**: Temperature coefficient and characteristic code. 3. **151**: Capacitance value. The first two digits (15) are significant figures, and the third (1) is the multiplier (10^1). Result: **150 pF**. 4. **J**: Tolerance code. J represents **±5%**. 5. **O3**: Voltage rating indicator (typically 300V or 500V depending on the specific manufacturer series). 6. **SA-R02**: Packaging and compliance suffix (e.g., Lead-free/RoHS compliance or specific tape-and-reel formatting). --- ### 3. Key Features & Applications #### Features * **Low Dissipation Factor:** High "Q" factor, making them ideal for high-frequency filters. * **Stability:** Very low capacitance change over time and temperature variations. * **High Precision:** Unlike ceramic capacitors (which can drift), mica maintains tight tolerances. #### Common Applications * **RF Oscillators:** Used to set frequencies in radio transmitters. * **Tuning Circuits:** Found in amateur radio gear and high-end audio equipment. * **Pulse Power:** Used in circuits requiring high-speed discharge and low inductance. * **Logic and Transmission:** Delay lines and impedance matching. --- ### 4. Typical Physical Dimensions (DM05 Series) ```text Width: ~11.4 mm (Max) Height: ~9.1 mm (Max) Thickness: ~4.5 mm (Max) Lead Spacing: 3.0 mm to 5.0 mm (standardized) ```