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    Micro Batteries

    Micro BatteriesCoin Manganese Dioxide Lithium Batteries

    Coin manganese dioxide lithium batteries are small-sized primary batteries for various
    applications such as TPMS (Tire Pressure Monitoring System) for automobile, IoT devices and backup power source for memory.

    Click here for details▼

    Coin manganese dioxide lithium batteries

    Selection Guide

    Standard
    		 Lineup of 11 models from small size and thin models to high capacity models
    Extended Temperature
    		 Supports an operating temperature range up to 85 ºC for common ICs
    Heat-resistant
    		Ideal for devices used in severe operating temperature environments including automobiles and FA
    High Drain
    		Ideal for devices with large current loads, such as LPWA communication, etc.
    Characteristic comparison PDF （PDF : 678KB）
    		  
    Selection Guide
    Swipe left or right to change screens View in landscape mode.
    Type Standard Extended
    Temperature         		Heat Resistant High Drain
    Model number
    (CR2032 size)    		 CR2032 CR2032X CR2032W CR2032R
    Operating temperature −30°C to +70°C −40°C to +85°C −40°C to +125°C −30°C to +70°C
    Recommended discharge current
    * Current with which 90% of nominal capacity can be used    		 1mA or less 1mA or less 1mA or less 3mA or less
    Maximum pulse current
    * Current for maintaining minimum 2V voltage with pulsed discharge of 3 seconds and 50% nominal capacity discharged (ambient temperature 23ºC)     		30ｍA 30ｍA 30ｍA 50ｍA

    Feature

    • Lightweight, High Voltage and High Energy Density
      The battery voltage is 3V, almost double that of normal alkaline or manganese batteries. This means that the number of batteries required for equipment can be halved for maximum space saving and weight reduction.
    • Excellent Discharge Characteristics
      Voltage characteristics remain stable even for a long period of discharge, greatly improving the reliability of equipment that uses the battery. Such equipment is also maintenance-free (battery replacement is seldom required).
    • Outstanding Temperature Characteristics
      Murata's original organic electrolyte provides superb characteristics over a wide range of temperature from low to high.
      - Standard / High drain: -30 to +70 degrees C
      - Extended temperature: -40 to +85 degrees C
      - Heat-resistant: -40 to +125 degrees C
    • Excellent Leakage Resistance
      The newly developed battery construction and electrolyte ensure maximum leakage resistance over a long span of time.
    • Excellent Long-Term Reliability
      Carefully selected active materials are used for the active material as well as for the electrolyte. These materials are sealed by Murata's innovative technology to minimize battery self-discharge. The annual self-discharge rate at room temperature and normal humidity is less than 1% of the nominal capacity.
    • UL Approved Parts
      Murata's Coin Manganese Dioxide Lithium Batteries are approved by UL. (UL1642 File No. MH12566)
    • RoHS directive・European Directives
      This product does not contain Mercury (Hg), Cadmium (Cd), nor Lead (Pb), and conforms to EC regulation values (Directive 2006/66/EC, 2013/56/EU).
      Battery pack are excluded from RoHS directive (DIRECTIVE 2011/65/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment).

    Tab-welder

    Matrix of Tab-Welded Lithium Manganese Dioxide Battery

    Swipe left or right to change screens View in landscape mode
    Mounting Direction H
    		V
    		M
    Tab Spec Shape C E O E P
    Width of Negative
    Tab Tip (mm)    		 0.75 0.75 0.75 0.75 1.8 2.8 0.75 2.0 1.8
    Width of Positive
    Tab Tip (mm)    		 0.75 0.75×2 0.75×2 0.75×2 2.8 1.8 0.75×2 2.0 1.8
    Pitch (mm) 20.5 17.8 20.5 35.6 20.5 19.4 N/A N/A N/A
    Standard CR2032-TAB
    To be discontinued
    		  CR2032-HE8
    		CR2032-HE1
    		  CR2032-HO6
    		  CR2032-VE3
    		   
    CR2430-TAB
    To be discontinued
    		  CR2430-HE1
    		CR2430-HE2
    		  CR2430-HO1
    		  CR2430-VE1
    		   
    CR2450-TAB
    To be discontinued
    		  CR2450-HE5
    		CR2450-HE6
    		  CR2450-HO5
    		  CR2450-VE6
    		   
    Extended Temp. CR2032X-TAB     CR2032X-HE1
    		  CR2032X-HO6
    		       
    CR2450X-TAB     CR2450X-HE6
    		  CR2450X-HO5
    		       
    CR2477X-TAB     CR2477X-HE2
    		  CR2477X-HO4
    		       
    CR3677X-TAB
    To be discontinued
    		      CR3677X-HE1
    		         
    Heat-resistant CR2032W-TAB CR2032W-HC5
    		  CR2032W-HE1
    		  CR2032W-HO6
    		CR2032W-HOB
    		    CR2032W-MPA
    CR2050W-TAB
    NRND
    		              CR2050W-MP6
    		 
    CR2450W-TAB     CR2450W-HE6
    		  CR2450W-HO5
    		    CR2450W-MP1
    		 
    CR2477W-TAB
    NRND
    		    CR2477W-HE2
    		  CR2477W-HO4
    		       
    High Drain CR2032R-TAB
    NRND
    		    CR2032R-HE1
    		  CR2032R-HO6
    		       
    CR2450R-TAB
    NRND
    		    CR2450R-HE6
    		  CR2450R-HO5
    		       

    For tab shapes or specifications not included in the above list, please consult a sales representative.

    Principle of Lithium Manganese Dioxide Battery

    Specially processed manganese dioxide (MnO2) is used for the active cathode material, and high-voltage, high-activity lithium metal for the active anode material. The electrolyte is lithium salt molten into an organic solution to ensure easy transmission of high voltage and high energy to the exterior.
    Battery discharge reactions are as follows:

    Principle of Lithium Manganese Dioxide Battery

    With open circuit voltage of approx. 3V, the battery voltage is extremely stable and impedance remains low and stable during discharge.

    Cross Section

    Cross Section

    Lithium Batteries UN38.3 Test Summary

    You can download Lithium Batteries UN38.3 Test Summary here.

    Request for handling of Coin Manganese Dioxide Lithium Batteries

    We received some inquiries such as “Mechanical Malfunction”, “Short Operating time”, “Low Voltage” when using Coin Manganese Dioxide Lithium Batteries. However, we conclude that those are caused by “External Short-circult”.
    It occurs by incorrect handling or carelessness of the battery. Therefore, please read the “Caution” below and pay full attention to external short-circuits.

    In addition, we kindly ask you to send “Caution” to selling place when selling our Coin Manganese Dioxide Lithium Batteries to other customer.

    Reference documents(Environment / Transportation)

    Technical information

    Click here for Coin manganese Dioxide Lithium battery's technical note

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