The part number **RTD-6V472MKHTQ-R5** corresponds to a specialized **Aluminum Electrolytic Capacitor**, specifically designed for high-performance automotive and industrial applications. Below is a breakdown of its technical specifications and physical characteristics. ### 1. Technical Specifications | Parameter | Specification | Description | | :--- | :--- | :--- | | **Capacitance** | 4700 µF (472) | High energy storage capacity. | | **Voltage Rating** | 6.3V (6V) | Maximum DC working voltage. | | **Tolerance** | ±20% (M) | Standard industry tolerance for electrolytic caps. | | **Operating Temperature** | -55°C to +125°C | Rated for extreme thermal environments. | | **Mounting Type** | Surface Mount (SMD) | Designed for automated PCB assembly. | | **Series** | RTD | Known for high vibration resistance and longevity. | --- ### 2. Part Number Decoder Understanding the alphanumeric string helps identify the component's role: * **RTD**: The specific series name (usually indicates high-temperature, low ESR, or anti-vibration features). * **6V**: Represents the **6.3 Volt** rating. * **472**: Capacitance code. The first two digits are the value, the third is the multiplier ($47 \times 10^2 = 4700$ µF). * **M**: Tolerance code ($\pm 20\%$). * **KHTQ**: Specific manufacturing/packaging internal codes (often referring to case size and high-temperature rating). * **R5**: Typically denotes the taping/reel size for the SMD delivery format. --- ### 3. Key Features and Applications #### Key Features: * **High Temperature Stability:** Unlike standard capacitors rated at 85°C or 105°C, this part is rated up to **125°C**, making it suitable for under-the-hood automotive electronics. * **Low ESR:** Low Equivalent Series Resistance allows the part to handle higher ripple currents without overheating. * **Vibration Resistance:** Parts in this series often feature reinforced "anti-vibration" structures to prevent the solder joints from cracking in mechanical environments. #### Typical Applications: 1. **Automotive ECU:** Power supply smoothing for Engine Control Units. 2. **Infotainment Systems:** Filtering noise in vehicle audio and display systems. 3. **DC/DC Converters:** Bulk energy storage and ripple voltage reduction in power modules. 4. **Industrial Automation:** Used in robotics and sensors exposed to heat. --- ### 4. Comparison with Standard Capacitors | Feature | RTD Series (Automotive) | Standard Electrolytic | | :--- | :--- | :--- | | **Lifespan** | 2000 - 5000 hours @ 125°C | 1000 - 2000 hours @ 85°C | | **Mechanical Strength** | High (Vibration proof) | Low (Standard SMD) | | **Cost** | Higher | Lower |