The **LCS-5F-R** is an electronic component primarily classified as a **Supercapacitor** (also known as an Electric Double-Layer Capacitor or EDLC) manufactured by **KEMET**. It belongs to the **FC Series** and is specifically designed for surface-mount (SMD) applications. --- ### 1. Key Technical Specifications Below are the primary electronic characteristics of the LCS-5F-R: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 0.047 Farads (47,000 µF) | | **Voltage Rating** | 5.5 VDC | | **Tolerance** | -20% to +80% | | **ESR (Equivalent Series Resistance)** | ≤ 50 Ω (at 1 kHz) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -25°C to +70°C | | **Termination Type** | Reflow Solderable | --- ### 2. Physical and Chemical Composition The "LCS" designation indicates a specific form factor and electrolyte chemistry: * **Electrolyte:** It utilizes an organic electrolyte which allows for a high energy density in a small volume. * **Package Type:** It features a low-profile "coin cell" shape adapted for automated pick-and-place assembly. * **Safety Features:** KEMET’s FC series is designed to be highly resistant to liquid leakage, a common failure point in older supercapacitor designs. --- ### 3. Functional Applications The LCS-5F-R is not used for high-frequency filtering (like ceramic capacitors) but rather for **energy storage**. Common use cases include: * **RAM/RTC Backup:** Maintaining power to Real-Time Clocks (RTC) or volatile memory when the main power source is removed. * **Power Outage Protection:** Providing "last gasp" power to microcontrollers to save data during sudden power loss. * **Battery Replacement:** In low-power devices where frequent battery replacement is impractical and charging cycles are frequent. --- ### 4. Critical Design Considerations If you are integrating this into a circuit, keep these points in mind: 1. **Polarity:** These are polarized components. Reverse voltage will lead to permanent degradation or failure. 2. **Reflow Soldering:** The "R" suffix often denotes suitability for reflow processes, but strict adherence to the temperature profile is necessary to prevent the electrolyte from boiling. 3. **Self-Discharge:** Like all supercapacitors, it has a self-discharge rate higher than standard batteries. It is best suited for short-term backup (minutes to days, depending on load). ---