The part number **398LBA063M2CE** refers to a high-performance **Aluminum Electrolytic Capacitor**, typically manufactured by companies like Illinois Capacitor (now part of Cornell Dubilier/CDE). These capacitors are designed for "Snap-In" mounting on printed circuit boards (PCBs). --- ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Capacitance** | 3,900 µF (Microfarads) | | **Voltage Rating** | 63 VDC (Volts Direct Current) | | **Tolerance** | ±20% (M) | | **Operating Temperature** | -40°C to +105°C | | **Termination Style** | Snap-In (2-Prong) | | **Case Size (Approx.)** | 22mm x 40mm (or similar based on series) | | **Lifetime** | ~2,000 to 3,000 hours at 105°C | --- ## Part Number Breakdown (Nomenclature) Understanding the alphanumeric code helps identify the component's physical and electrical characteristics: 1. **398**: Represents the **Capacitance**. The first two digits (39) are the significant figures, and the third (8) is the multiplier ($10^8$ in picofarads). $39 \times 10^8$ pF = 3,900 µF. 2. **LBA**: The **Series Name**. LBA is a high-temperature, long-life snap-in series. 3. **063**: The **Voltage Rating** (63 Volts). 4. **M**: The **Tolerance** code (M = ±20%). 5. **2CE**: This suffix usually refers to the **Case Dimensions** and packaging type (e.g., 22mm diameter). --- ## Key Features and Applications ### Features * **High Ripple Current:** Designed to handle significant AC fluctuations on top of the DC voltage. * **Snap-In Terminals:** Provides a secure mechanical fit to the PCB before soldering, which is ideal for power supply environments. * **High Temperature Rating:** The 105°C rating makes it suitable for industrial environments where heat is a factor. ### Common Applications * **Switch Mode Power Supplies (SMPS):** Used for smoothing and filtering rectified AC. * **Audio Amplifiers:** Acts as a power reservoir for high-fidelity sound output. * **Industrial Controls:** Provides energy storage and voltage stabilization. * **Uninterruptible Power Supplies (UPS):** Used in the DC link stages. --- ## Installation Precautions * **Polarity:** Electrolytic capacitors are polarized. Ensure the negative stripe on the casing aligns with the negative marking on the PCB. * **Voltage Derating:** It is best practice to operate the capacitor at 80% or less of its rated voltage (63V) to increase longevity. * **Heat Sensitivity:** Avoid placing the component directly next to high-heat sources like power resistors or heat sinks.