The **RTD-80V221MJHTQ-R5** is a high-performance surface-mount (SMD) aluminum electrolytic capacitor, specifically designed for high-reliability applications such as automotive electronics and industrial power systems. ### 1. Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Capacitance** | 220 µF | Standard tolerance ±20% (M) | | **Voltage Rating** | 80V DC | Surge voltage capability usually higher | | **Series** | RTD | High temperature, long life, low ESR | | **Case Size (DxL)** | 10mm x 10.2mm | Size Code: J | | **Temperature Range** | -55°C to +125°C | Rated for extreme environments | | **Life Span** | 2,000 to 5,000 hours | At maximum rated temperature | | **Mounting Type** | SMD (V-Chip) | Designed for automated reflow soldering | --- ### 2. Part Number Breakdown While manufacturer codes vary slightly (often produced by brands like **Lelon** or **Nichicon** types), the nomenclature typically follows this logic: * **RTD**: Series name (typically implies Low ESR and High Temperature). * **80V**: Rated operating voltage. * **221**: Capacitance code. The first two digits are significant figures, the third is the multiplier ($22 \times 10^1 = 220 \text{ \mu F}$). * **M**: Tolerance ($\pm 20\%$). * **J**: Case size code (Diameter 10mm). * **H**: Height code (10.2mm or 10.5mm). * **TQ-R5**: Taping and packaging code (Tape & Reel for pick-and-place machines). --- ### 3. Key Features and Applications #### Features * **Low ESR:** Minimizes heat generation during high ripple current conditions. * **Vibration Resistance:** Often includes additional "anti-vibration" structures to ensure reliability in moving vehicles. * **AEC-Q200 Qualified:** Generally meets automotive stress test qualifications. #### Common Applications 1. **Automotive ECU:** Power management for Engine Control Units. 2. **LED Drivers:** Smoothing high-voltage inputs in automotive or industrial lighting. 3. **DC-DC Converters:** Filtering input/output noise in power supplies. 4. **Telecommunications:** Base station power modules requiring long-term stability. --- ### 4. Handling and Soldering Since this is an SMD part, specific care must be taken during the assembly process: ```text Reflow Profile (Typical): - Pre-heat: 150°C to 180°C (60-120 sec) - Peak Temp: 240°C to 250°C (Max 5-10 sec) - Cooling: Natural cooling recommended to prevent thermal shock ```