The **ME61ZBD-R** is an electronic component primarily classified as a **Secondary Lithium-ion Rechargeable Battery**, specifically a high-drain, button-cell type manufactured by **Maxell**. These parts are commonly used in industrial automation, medical devices, and high-end consumer electronics. --- ### 1. Technical Specifications Below are the core electrical and physical characteristics of the ME61ZBD-R: | Feature | Specification | | :--- | :--- | | **Chemistry** | Lithium Manganese Dioxide (Rechargeable) | | **Nominal Voltage** | 3.0V | | **Nominal Capacity** | 5.0 mAh to 5.5 mAh | | **Standard Charge Current** | 0.05 mA | | **Operating Temperature** | -20°C to +60°C | | **Dimensions** | Approx. 6.8mm (Diameter) x 2.1mm (Height) | | **Mounting Type** | PCB Mount (Usually with Solder Tabs/Pins) | --- ### 2. Key Features and Construction The "R" suffix in the part number often indicates a specific terminal configuration (tabs/pins) for surface mounting or through-hole soldering on a Printed Circuit Board (PCB). * **High Charge/Discharge Cycle Life:** Designed to handle hundreds of shallow discharge cycles, making it ideal for memory backup. * **Reflow Solderable:** Many versions of the ME61 series are designed to withstand the high temperatures of infrared reflow soldering processes. * **Stable Discharge Voltage:** Maintains a flat discharge curve, ensuring that sensitive ICs receive consistent power until the battery is nearly depleted. * **Compact Footprint:** Its small size allows it to be integrated into space-constrained designs like smartwatches or compact sensors. --- ### 3. Common Applications This part is typically used as a **Power Backup Source** for volatile memory or Real-Time Clocks (RTC). 1. **Industrial Equipment:** Maintaining system settings in PLCs (Programmable Logic Controllers) during power outages. 2. **Medical Devices:** Powering internal clocks in portable diagnostic tools. 3. **IoT Devices:** Acting as a buffer for small energy-harvesting systems. 4. **Communication Gear:** Backing up configuration data in handheld radios or network modules. --- ### 4. Handling and Safety * **Charging Circuitry:** Unlike primary (disposable) batteries, the ME61ZBD-R requires a specific charging circuit. Overcharging can lead to leakage or degradation. * **Polarity:** Ensure correct orientation on the PCB; reverse charging will permanently damage the internal chemistry. * **Storage:** Store in a cool, dry place to prevent self-discharge and terminal oxidation.