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MURATA'S ELECTRICAL DOUBLE-LAYER CAPACITORS WITH LONG LIFE, HIGH-TEMP RELIABILITY DELIVER ADVANCED SOLUTION TO DESIGN ENGINEERS Miniaturized DMT Series Integrates Company's Proprietary Supercapacitor Technology

September 9, 2013

Murata Manufacturing Co., Ltd.
President/Statutory Representative Director: Tsuneo Murata

DOUBLE-LAYER CAPACITORS
DOUBLE-LAYER CAPACITORS

Murata Manufacturing Co., Ltd. today announced the launch of its DMT series, one of the most reliable electrical double-layer capacitors (EDLC) available on the market today. The solution offers superior long-term, high temperature reliability (five years at 70°C) , a maximum operating temperature of 85°C, low resistance (130mΩ of high-current, high-output charging and discharging) , a nominal capacitance range of 470mF, and an innovative design that enables high voltage handling (4.2V) . Measuring 14 x 21mm with a thickness of just 3.5mm, the DMT series is ideally suited for applications such as solid state drive (SSD) and communication system backup, power assistance for smart meters, and energy-harvesting devices.

Features

  • Long-term reliability of five years at 70°C
  • Low ESR (equivalent series resistance) of 130mΩ enables high-current, high-output charging and discharging
  • Innovative internal structure design enables high voltage operation

Applications

  • SSD backup
  • Power assistance for smart meters
  • Backup power supply for communication systems
  • Backup power supply for other systems
  • Energy storage device for energy-harvesting systems

The expansion of these markets is driving the demand for smaller, thinner, and low-resistance capacitors that assure high reliability in the event of power failures. For example, since an increasing number of end products are being used outdoors (e.g., smart meters) , there is a heightened focus on ensuring that solutions have exceptional dependability. Coupled with more miniaturized features, design engineers now require products that are both extremely advanced and eco-friendly.

The basis behind this technology is the result of the company's collaboration with CAP-XX. In order to meet demand for devices with greater efficiency and functionality, Murata strategically acquired supercap technology from CAP-XX in 2008. Murata's focus on EDLC research and development, coupled with CAP-XX's market expertise, drives the advancement of enhanced EDLC design.

Parts number

  • DMT334R2S474M3DTA0

Characteristics

Part number Rated voltage Nominal capacitance ESR at 1kHz Thickness
DMT334R2S474M3DTA0 4.2V 470mF 130mΩ 3.5mm

Package dimensions: 21.0mm x 14.0mm
Maximum operating temperature: 85°C

Electric characteristics

High-temperature loading test characteristics

Test conditions: Loading voltage of 4.2V at 70°C for 2,000 hours

Capacitance

Capacitance

ESR

ESR

Constant power discharge characteristics

Constant power discharge (discharge power: 1W)

Constant power discharge (discharge power: 1W)

Constant power discharge (discharge power: 5W)

Constant power discharge (discharge power: 5W)

External Size

External Size

Production

Mass production started at Fukui Murata Manufacturing Co., Ltd. from August 2013.

Murata in Brief

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. With annual revenues of ¥585 billion (~$7.1B USD) , Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata's website at http://www.murata.com/

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