The part number **DM05CA102KO3-RHR02** refers to a high-reliability, surface-mount **Multilayer Ceramic Capacitor (MLCC)**, typically used in aerospace, defense, or high-performance industrial applications. Below is the technical breakdown of its electronic characteristics and specifications. --- ## 1. Technical Specifications Table | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | MLCC | Multilayer Ceramic Capacitor | | **Capacitance** | 1,000 pF (1 nF) | "102" code: 10 followed by 2 zeros | | **Tolerance** | ±10% | "K" designator | | **Voltage Rating** | 100V - 200V (Typ.) | "O3" series specific rating | | **Dielectric** | C0G (NP0) | Ultra-stable, low loss, no aging | | **Case Size** | 0805 or 1206 | Depending on specific manufacturer series | | **Termination** | Sn/Pb or Gold | Often used for high-reliability/COTS+ | --- ## 2. Key Features ### A. Dielectric Material (C0G/NP0) The "CA" or "C" designator usually indicates a **C0G** dielectric. * **Stability:** It is a Class I material, meaning the capacitance does not change significantly with temperature, voltage, or time. * **Loss Factor:** It has an extremely low dissipation factor, making it ideal for high-frequency filters and precision timing circuits. ### B. High Reliability (RHR/R02) The suffix **RHR02** often points to a "High Reliability" or "Established Reliability" screening process. * **Testing:** These parts undergo rigorous thermal shock, burn-in, and moisture resistance testing. * **Application:** Specifically designed to avoid the "cracking" issues found in standard commercial capacitors when exposed to mechanical stress or extreme thermal cycling. ### C. Termination Style Unlike standard lead-free (RoHS) commercial parts, parts in this series often feature **Tin-Lead (Sn/Pb)** finishes. This is preferred in aerospace and military sectors to prevent **Tin Whiskers**, which can cause short circuits in vacuum environments or long-lifecycle equipment. --- ## 3. Typical Applications Due to its high precision and reliability rating, this part is commonly found in: 1. **RF/Microwave Circuits:** Used as a decoupling or bypass capacitor in high-frequency signal paths. 2. **Timing Circuits:** Where the drift of capacitance over temperature must be minimized. 3. **Avionics Control Units:** Where vibration and thermal extremes are common. 4. **Medical Equipment:** High-grade imaging or life-support sensors. --- ## 4. Understanding the Part Number String (General Breakdown) | Segment | Meaning | | :--- | :--- | | **DM** | Manufacturer Series (often related to Dielectric Materials or specialized high-rel vendors) | | **05** | Case size code (e.g., 0805 metric/imperial cross-reference) | | **CA** | Dielectric code (C0G/NP0) | | **102** | Capacitance (10 + 00 = 1000 pF) | | **K** | Tolerance (±10%) | | **O3** | Voltage Rating code | | **RHR02** | High Reliability/Special Screening/Packaging code |