The **UCD0J331MCL6GS** is a high-performance surface-mount (SMD) aluminum electrolytic capacitor manufactured by **Nichicon**. It belongs to the **UCD series**, which is characterized by its low impedance and high reliability. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Capacitance** | 330 µF | | **Rated Voltage (DC)** | 6.3 V | | **Tolerance** | ±20% (at 120Hz, 20°C) | | **ESR / Impedance** | Low Impedance (High Frequency) | | **Operating Temperature** | -55°C to +105°C | | **Endurance (Life)** | 2000 to 5000 hours at 105°C | | **Package / Case** | SMD (Chip Type) | | **Dimensions** | Approx. 6.3mm (Diameter) x 7.7mm (Length) | --- ### 2. Key Features * **Low Impedance:** Specifically designed to offer low resistance to alternating current, making it efficient for high-frequency filtering. * **Reflow Soldering Compatible:** Built to withstand the high temperatures of automated surface-mount assembly lines. * **AEC-Q200 Qualified:** Many parts in this series are compliant with automotive reliability standards. * **RoHS Compliant:** Free from hazardous substances like lead. --- ### 3. Application Use Cases This specific capacitor is commonly found in circuits where space is limited but high capacitance and stability are required: 1. **Motherboards & Computer Peripherals:** Used for local decoupling and voltage regulation. 2. **DC-DC Converters:** Acts as an input or output filter to smooth out voltage ripples. 3. **Automotive Electronics:** Powering infotainment systems or ECU (Engine Control Unit) sensors. 4. **Telecommunications:** Integrated into switching power supplies for networking equipment. --- ### 4. Part Number Breakdown The part number can be decoded as follows: * **UCD:** Series name (Low Impedance, SMD type). * **0J:** Voltage code (6.3 Volts). * **331:** Capacitance code (33 followed by 1 zero = 330µF). * **M:** Tolerance code (±20%). * **CL:** Package/Size code. * **6GS:** Packaging style (Taping/Reel).