The part number **SLPX331M350E3P3** refers to a high-performance **Aluminum Electrolytic Capacitor** manufactured by **Cornell Dubilier (CDE)**. It belongs to the **SLPX Series**, which is designed for long life and high ripple current in a snap-in package. --- ### 1. Part Number Breakdown The nomenclature reveals the specific characteristics of the component: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **SLPX** | Series Name | 85°C Snap-In Aluminum Electrolytic | | **331** | Capacitance | 330 µF (33 + 1 zero) | | **M** | Tolerance | ±20% | | **350** | Voltage | 350 Volts DC | | **E** | Case Code | Refers to diameter (typically 30mm) | | **3** | Case Length | Refers to height (typically 30mm) | | **P3** | Termination | 3-pin or standard snap-in lead style | --- ### 2. Key Technical Specifications These capacitors are utilized for energy storage and filtering in power electronics. * **Capacitance:** 330 µF * **Voltage Rating:** 350 VDC * **Operating Temperature:** -40°C to +85°C * **Endurance (Lifetime):** 3,000 hours at 85°C (Load Life) * **Mounting Type:** Through Hole, Snap-In (Physical "snaps" hold it to the PCB before soldering). * **Polarity:** Polarized (Electrolytic). --- ### 3. Physical Dimensions (Approximate) | Dimension | Measurement | | :--- | :--- | | **Diameter** | 30.00 mm | | **Height (Max)** | 30.00 mm | | **Lead Spacing** | 10.00 mm | --- ### 4. Applications and Use Cases This specific capacitor is commonly found in circuits requiring high-voltage DC stabilization: 1. **Switch Mode Power Supplies (SMPS):** Used as a bulk storage capacitor for the input rectification stage. 2. **Uninterruptible Power Supplies (UPS):** Filtering and energy storage for power backup systems. 3. **Motor Drives:** Used in the DC bus of industrial motor controllers. 4. **Solar Inverters:** Managing high-voltage DC links from solar arrays. --- ### 5. Circuit Symbol & Footprint ```text + ---||--- - (Capacitor) ``` * **Warning:** Since this is a polarized capacitor, the negative terminal (indicated by a stripe on the casing) must be connected to the lower potential. Reversing polarity on a 350V capacitor can lead to component failure or explosion. ---