High-reliability electric double-layer capacitors

September 10, 2013 // By Graham Prophet
Murata positions its DMT series as one of the most reliable electrical double-layer capacitors (EDLC) available on the market today.

The capacitors offer long-term, high temperature reliability (five years at 70°C), a maximum operating temperature of 85°C, low resistance (130 mΩ of high-current, high-output charging and discharging), a nominal capacitance range of 470 mF, and a design that enables high voltage handling (4.2V). Measuring 14 x 21 mm with a thickness of 3.5 mm, the DMT series is suited for applications such as solid state drive (SSD) and communication system backup, power assistance for smart meters, and energy-harvesting devices.

This market’s expansion in recent years has driven 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 (i.e. smart meters), there is a heightened focus on ensuring that solutions have exceptional dependability. Coupled with more miniaturised specifications, 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 acquired super cap technology from CAP-XX in 2008.

Murata Europe; www.murata.eu