The part number **HT-35V271MH10XN-R2** corresponds to a high-temperature, surface-mount (SMD) aluminum electrolytic capacitor. This specific part is commonly used in automotive and industrial applications where reliability under heat and vibration is critical. ### Technical Specification Breakdown | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | HT | Indicates High Temperature / Low Impedance series. | | **Voltage (Rated)** | 35V | The maximum continuous operating DC voltage. | | **Capacitance** | 270µF | The energy storage capacity (271 code: 27 x 10^1). | | **Tolerance** | ±20% (M) | Standard industry tolerance for electrolytic capacitors. | | **Case Size** | 10 x 10.2 mm (H) | Diameter is 10mm, height is roughly 10.2mm. | | **Temperature Range** | -55°C to +125°C | Designed for extreme environments (Automotive Grade). | | **Mounting Type** | SMD / V-Chip | Surface-mount design for automated PCB assembly. | | **Packaging** | Tape & Reel (R2) | Supplied on a 13-inch or 15-inch reel for pick-and-place. | --- ### Key Features and Construction 1. **Low ESR (Equivalent Series Resistance):** The HT series is engineered to have low internal resistance, which reduces heat generation during high-frequency ripple current cycles. 2. **Extended Lifetime:** Typically rated for **2,000 to 5,000 hours at 125°C**. Because chemical aging doubles for every 10°C drop, these last significantly longer at room temperature. 3. **Vibration Resistance:** The "XN" designation often refers to an anti-vibration structure, featuring additional soldering terminals or a specific base plate to withstand high G-forces. 4. **AEC-Q200 Compliance:** Most capacitors in this category meet automotive stress test qualifications. ### Typical Applications * **Automotive Electronics:** Engine Control Units (ECUs), LED lighting drivers, and ADAS sensors. * **Industrial Power Supplies:** DC-DC converters and switching regulators operating in enclosed, hot environments. * **Telecommunications:** Base station equipment requiring long-term stability. --- ### Schematic Representation In a circuit diagram, this component is represented by the polarized capacitor symbol: ```text + | | - ----[| |]---- | | ``` *Note: Always ensure correct polarity during installation, as reversing voltage on aluminum electrolytic capacitors can cause venting or failure.*