The **EETUQ1E393D** is a specific part number for an aluminum electrolytic capacitor manufactured by **Panasonic**. It belongs to the **UQ series**, which is characterized by its "Snap-in" terminal type and compact size. --- ### 1. Key Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Capacitance** | 39,000 µF | Extremely high capacity for energy storage | | **Voltage Rating** | 25 VDC | Maximum continuous DC voltage | | **Tolerance** | ±20% | Standard industrial tolerance | | **Temperature Range** | -40°C to +85°C | Operating thermal limits | | **Endurance** | 2,000 Hours | Rated life at 85°C | | **Termination Style** | Snap-In | 2-pin PCB mounting | | **Form Factor** | Can (Snap-In) | Radial cylindrical shape | --- ### 2. Physical Dimensions While specific batch dimensions can vary slightly, the UQ series for this rating typically follows these dimensions: * **Diameter:** Approximately 30mm to 35mm. * **Height:** Approximately 40mm to 50mm. * **Lead Spacing:** Standard 10mm pitch for snap-in lugs. --- ### 3. Component Breakdown #### A. Dielectric Material This is an **Aluminum Electrolytic** capacitor. It uses an electrolyte liquid and an aluminum oxide layer as the dielectric. This technology allows for the very high capacitance (39,000 µF) required for power filtering. #### B. Snap-In Terminals The "Snap-in" design features specially shaped leads that "click" into pre-drilled holes on a PCB. This holds the component in place during the soldering process and provides a robust mechanical connection, which is vital for heavy capacitors. #### C. Safety Vent Like most large electrolytic capacitors, the top of the can features a "K" or "X" shaped pressure relief vent. This prevents the casing from exploding if the capacitor fails or is subjected to reverse polarity. --- ### 4. Common Applications Due to its high capacitance and 25V rating, this part is primarily used in: * **Power Supply Smoothing:** Reducing ripple voltage in AC-to-DC converters. * **Audio Amplifiers:** Acting as a reservoir for power stages to handle bass transients. * **Industrial Equipment:** General-purpose DC filtering in low-voltage circuits. * **UPS Systems:** Short-term energy storage. ---