The **UCS2C331MHD** is a high-performance, radial leaded aluminum electrolytic capacitor manufactured by **Nichicon**. It belongs to the **CS series**, which is specifically designed for high reliability and long life in demanding power applications. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Nichicon | | **Series** | CS (High Reliability / Long Life) | | **Capacitance** | 330 µF | | **Voltage Rating** | 160V DC | | **Tolerance** | ±20% at 120Hz, 20°C | | **Temperature Range** | -25°C to +105°C | | **Lifespan** | 10,000 hours at 105°C | | **Package / Case** | Radial, Can | | **Dimensions** | 18mm (Diameter) x 31.5mm (Length) | | **Lead Spacing** | 7.5mm | --- ### ## Key Features and Characteristics 1. **Extended Longevity:** One of the standout features of this part is its **10,000-hour load life**. This makes it ideal for industrial equipment where maintenance intervals need to be minimized. 2. **High Ripple Current Handling:** Designed to handle significant AC ripple current without excessive internal heating, which is crucial for power conversion. 3. **Stability:** The CS series is engineered to maintain stable capacitance and low ESR (Equivalent Series Resistance) over its operational life. 4. **Polarization:** As an aluminum electrolytic capacitor, it is **polarized**. The longer lead indicates the positive (anode) terminal, and the casing usually features a stripe indicating the negative (cathode) terminal. --- ### ## Applications The UCS2C331MHD is commonly used in the following electronic circuits: * **Switching Power Supplies (SMPS):** Used for smoothing and filtering DC output. * **LED Drivers:** High-reliability lighting systems require capacitors that can survive the heat generated in small enclosures. * **Industrial Automation:** Powering PLCs and motor controllers where downtime is costly. * **Ballast Circuits:** Used in electronic ballasts for specialized lighting. --- ### ## Part Number Breakdown The part number can be decoded as follows: * **UCS:** Series name (CS series). * **2C:** Voltage code (160V). * **331:** Capacitance code (33 followed by 1 zero = 330µF). * **M:** Tolerance code (±20%). * **HD:** Package size and lead style code.