The **MVH12V2AD-R** is a high-performance **Surface Mount (SMD) Aluminum Electrolytic Capacitor** from the MVH series, typically manufactured by **United Chemi-Con (Nippon Chemi-Con)**. These capacitors are specifically designed for high-temperature durability and low impedance applications. --- ### 1. Key Technical Specifications Below are the primary electrical characteristics and physical dimensions for this specific component: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 2.2 $\mu$F | | **Rated Voltage** | 50V DC | | **Tolerance** | ±20% (M) | | **Temperature Range** | -40°C to +125°C | | **Endurance (Life)** | 1,000 to 2,000 hours at 125°C | | **Case Size (Diameter)** | 4.0 mm | | **Case Height** | 5.7 mm | | **Package Type** | Surface Mount (V-Chip) | --- ### 2. Physical and Chemical Construction The device is an "Aluminum Electrolytic" capacitor, which means its internal structure consists of: * **Anode Foil:** High-purity aluminum etched to increase surface area and covered with an aluminum oxide dielectric layer. * **Electrolyte:** A liquid or gel conducting medium that facilitates the self-healing process of the dielectric. * **Cathode Foil:** A second layer of aluminum foil. * **Safety Features:** The MVH series is **RoHS compliant** and designed to withstand lead-free reflow soldering processes. --- ### 3. Key Features & Applications The **MVH series** is categorized as a "High Temperature, Low Impedance" line. #### Features: * **Reflow Solderable:** Designed to survive the high heat of automated SMT assembly lines. * **Low ESR:** Provides lower internal resistance compared to standard electrolytic capacitors, improving efficiency in high-frequency circuits. * **Compact Footprint:** The 4x5.7mm size is ideal for high-density PCB designs. #### Common Applications: 1. **Automotive Electronics:** Used in Engine Control Units (ECUs) and ADAS systems due to the 125°C heat rating. 2. **Industrial Power Supplies:** Filtering noise in switching regulators. 3. **DC-DC Converters:** Providing stable voltage smoothing in miniaturized power modules. 4. **Lighting Drivers:** LED ballasts where heat dissipation is a concern. --- ### 4. Part Number Breakdown (Nomenclature) * **MVH:** Series name (Vertical Chip, High Temperature). * **12V:** Refers to the specific voltage/capacitance scaling (Note: In this specific series, the suffix "2AD" often maps to 50V/2.2uF). * **2AD:** Specific value and voltage code. * **-R:** Indicates tape and reel packaging for automated pick-and-place machines.