The **UPV1C331MFD** is a high-reliability aluminum electrolytic capacitor manufactured by **Nichicon**. It belongs to the **UPV series**, which is specifically designed for high stability and low leakage current applications. ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Nichicon | | **Series** | UPV (Ultra Miniature, Low Leakage) | | **Capacitance** | 330 µF | | **Rated Voltage (DC)** | 16 V | | **Tolerance** | ±20% | | **Temperature Range** | -55°C to +105°C | | **Lifetime (at 105°C)** | 2000 Hours to 5000 Hours (depending on size) | | **Termination Style** | Radial Lead (Through-Hole) | | **Dimensions** | 8.00mm Diameter x 11.50mm Length | | **Lead Spacing** | 3.50mm | --- ### 2. Key Features The UPV1C331MFD stands out due to several specific design choices: * **Low Leakage Current:** This model is optimized to minimize the current that "leaks" through the dielectric, making it ideal for timing circuits or coupling applications where signal integrity is crucial. * **Ultra-Miniature Size:** The UPV series uses a high-density electrolyte and foil technology to provide high capacitance in a small form factor compared to standard general-purpose capacitors. * **Wide Temperature Range:** Unlike standard consumer-grade capacitors that might stop at 85°C, this is rated for 105°C, providing a buffer for industrial environments. --- ### 3. Part Number Breakdown Understanding the Nichicon nomenclature helps in identifying variants: | Code Segment | Meaning | | :--- | :--- | | **UPV** | Series name (Low leakage, miniature) | | **1C** | Voltage Code (1C = 16 Volts) | | **331** | Capacitance Code (33 + one zero = 330µF) | | **M** | Tolerance (M = ±20%) | | **FD** | Configuration/Packaging (Lead type and diameter code) | --- ### 4. Common Applications * **Audio Equipment:** Used in signal paths where low noise and low leakage are required for high fidelity. * **Precision Timers:** Minimizes timing drift caused by leakage current. * **Portable Electronics:** Where PCB real estate is limited but high capacitance is needed. * **Power Supply Filtering:** Minor decoupling in low-voltage logic circuits.