The **KVR-5R0C155-R** is a high-performance **Electric Double Layer Capacitor (EDLC)**, commonly referred to as a **Supercapacitor** or Ultracapacitor, manufactured by Eaton (formerly Cooper Bussmann). --- ### 1. Technical Specifications The following table highlights the critical electrical and physical parameters of the component: | Parameter | Specification | | :--- | :--- | | **Capacitance** | 1.5 Farads (F) | | **Voltage Rating** | 5.0 Volts (V) | | **Capacitance Tolerance** | -20% to +80% | | **Equivalent Series Resistance (ESR)** | ~0.30 Ω (at 1 kHz) | | **Temperature Range** | -25°C to +70°C | | **Mounting Style** | Through Hole (Radial / Vertical) | | **Termination Style** | C-Style (Vertical) Leads | | **Lifecycle** | Up to 500,000 charge/discharge cycles | --- ### 2. Physical Construction & Design The "KVR" series is designed for vertical mounting on PCBs where space might be a constraint. * **Internal Chemistry:** It utilizes an electrochemical mechanism rather than a traditional dielectric, allowing for much higher energy density than standard electrolytic capacitors. * **Form Factor:** The "C" in the part number indicates a specific lead configuration (usually vertical/cylindrical) designed to minimize the footprint on a circuit board. * **RoHS Compliant:** The "-R" suffix denotes that the part is lead-free and compliant with environmental regulations. --- ### 3. Key Applications Because of its high capacitance and 5V rating, this part is primarily used for power backup and energy storage: 1. **Memory Backup (SRAM/RTC):** Provides power to Real-Time Clocks or volatile memory during main battery swaps or power outages. 2. **Smart Meters:** Used in electric, gas, and water meters to transmit data (RF pulses) when primary power is unavailable. 3. **Industrial Controllers:** Ensures graceful shutdowns of PLCs (Programmable Logic Controllers) during sudden power loss. 4. **Solar Energy Harvesting:** Stores small amounts of energy from solar cells to power low-energy sensors overnight. --- ### 4. Comparison: Supercapacitor vs. Battery | Feature | KVR-5R0C155-R (Supercap) | Rechargeable Battery | | :--- | :--- | :--- | | **Charge Time** | Seconds | Minutes to Hours | | **Cycle Life** | >500,000 | 500 - 2,000 | | **Energy Density** | Lower | Higher | | **Power Density** | Higher (Discharges quickly) | Lower | ---