The part number **HT-50V151MHC5EXN-R2** refers to a high-temperature, surface-mount (SMD) aluminum electrolytic capacitor. Below is a detailed breakdown of its technical specifications and characteristics. --- ### 1. Part Number Breakdown Analyzing the code helps identify the specific electrical properties: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **HT** | Series | High-temperature series (typically 125°C or 135°C) | | **50V** | Voltage Rating | 50 Volts (DC) | | **151** | Capacitance | 150 µF (15 followed by 1 zero) | | **M** | Tolerance | ±20% | | **HC5** | Case Size | Specific diameter x height code | | **EXN** | Internal Code | Manufacturer-specific material/termination code | | **R2** | Packaging | Tape and Reel | --- ### 2. Technical Specifications These capacitors are designed for demanding environments, particularly in automotive or industrial power supplies. * **Capacitance:** 150 Microfarads (µF) * **Voltage:** 50V DC (Maximum working voltage) * **Temperature Range:** Usually -40°C to +125°C (HT series standard). * **Mounting Type:** SMD (Surface Mount Device) / V-Chip. * **Endurance:** High reliability, often rated for 2,000 to 5,000 hours at maximum rated temperature. * **Polarity:** Polarized (must be installed with correct +/- orientation). --- ### 3. Key Electronic Characteristics #### Low ESR (Equivalent Series Resistance) The HT series is generally optimized for low ESR. This allows the capacitor to handle higher ripple currents without overheating, which is critical for smoothing power in switching regulators. #### Thermal Stability Unlike standard 85°C or 105°C capacitors, this component uses a specialized electrolyte and sealing material to prevent drying out at elevated temperatures, ensuring a longer lifespan in hot environments like engine compartments. #### Application Usage * **DC-DC Converters:** For input/output filtering. * **Automotive ECU:** Power management for electronic control units. * **Industrial Lighting:** LED drivers that generate significant heat. --- ### 4. Footprint and Dimensions (Typical HC5 Code) While exact dimensions can vary slightly by manufacturer (such as Lelon or Nippon Chemi-Con), the **HC5** code usually corresponds to: * **Diameter:** Approx. 8mm to 10mm. * **Height:** Approx. 10mm to 10.5mm. ```text Physical Structure: [ Aluminum Can ] <-- Top [ Electrolyte ] <-- Internal [ Rubber Seal ] <-- Bottom [ Metal Base ] <-- Soldering pads (SMT) ```