Coin Manganese Dioxide Lithium Batteries

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

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	Standard ＞
	Extended Temperature ＞
	Heat-resistant ＞
	High Drain ＞

Selection Guide

Feature

Tab-welder

Principle of Lithium Manganese Dioxide Battery

Cross Section

Lithium Batteries UN38.3 Test Summary

Reference

Technical information

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 : 678KB）

Type	Standard	Extended Temperature	Heat Resistant	High Drain
Model number (CR2032 size)	CR2032	CR2032X	CR2032W	CR2032R
Operating temperature	-30℃ to +70℃	-40℃ to +85℃	-40℃ to +125℃	-30℃ to +70℃
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

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).

Matrix of Tab-Welded Lithium Manganese Dioxide Battery
When you click the thumbnail, the detailed dimension will be displayed.

Mounting Direction		H			V	M
Tab Spec	Shape	E		O	E	P
	Width of Negative Tab Tip (mm)	0.75	0.75	1.8	0.75	2.0
	Width of Positive Tab Tip (mm)	0.75×2	0.75×2	2.8	0.75×2	2.0
	Pitch (mm)	17.8	20.5	20.5	N/A	N/A
Standard	CR2032	CR2032-HE8	CR2032-HE1	CR2032-HO6	CR2032-VE3
	CR2430	CR2430-HE1	CR2430-HE2	CR2430-HO1	CR2430-VE1
	CR2450	CR2450-HE5	CR2450-HE6	CR2450-HO5	CR2450-VE6
Extended Temp.	CR2032X		CR2032X-HE1	CR2032X-HO6
	CR2450X		CR2450X-HE6	CR2450X-HO5
	CR2477X		CR2477X-HE2	CR2477X-HO4
Heat-resistant	CR2032W		CR2032W-HE1	CR2032W-HO6
	CR2050W					CR2050W-MP6
	CR2450W		CR2450W-HE6	CR2450W-HO5		CR2450W-MP1
	CR2477W		CR2477W-HE2	CR2477W-HO4
High Drain	CR2032R		CR2032R-HE1	CR2032R-HO6
High Drain	CR2450R		CR2450R-HE6	CR2450R-HO5

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

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