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- Knowles Precision Devices launches supercapacitors, capable of operating up to 9 WVDC, designed to save PCB space
Knowles Precision Devices launches supercapacitors, capable of operating up to 9 WVDC, designed to save PCB space
Knowles Precision Device has announced the availability of its latest Electric Double Layer Capacitor (EDLC), or supercapacitor, modules. These new capacitors, based on Knowles’ Cornell Dubilier brand DGH and DSF Series supercapacitors, utilize a three-cell package for higher operating voltages and printed circuit board space savings.
The new supercapacitors offer a significant increase in voltage rating over typical radial-mount supercapacitors, up to 9.0 WVDC. A key feature of the DGH and DSF Series additions is the unique three-cell radial-leaded package. This compact design saves space and allows for much higher operating voltages, making them suitable for a wider range of applications. Both series include capacitance values from 0.33 to 5 Farads. Multiple devices can be banked for even higher capacitance or voltage.
These supercapacitors also feature internal cell balancing, ensuring optimal performance and serving as a production time saver. DGH and DSF Series three-cell supercapacitors are also more cost-effective than other options currently available.
From a performance standpoint, both series offer high energy density and extremely low self-discharge rates, benefiting energy storage applications. Both series are also tolerant of wide-ranging operational environments, with operating temperature ranges from -40 °C to +65 °C for DGH 8.1V/DSF 9.0V and -40 °C to +85 °C for DGH 6.9V/DSF 7.5V. Low equivalent series resistance (ESR) minimizes energy loss for high efficiency. ESR varies by part but is lower than most capacitors with similar storage capabilities. These supercapacitors are designed to withstand over 500,000 charge/discharge cycles, ensuring long-lasting performance without performance degradation. Operating life is expected to be up to 10 years.
Knowles Corporation acquired Cornell Dubilier in 2023 to broaden its range of high-quality film, electrolytic, and mica capacitors. The new devices, like other supercapacitors offered by Knowles’ Cornell Dubilier brand, provide a rapid power discharge that conventional capacitors or batteries cannot match. This large capacity enables them to support brief power interruptions, supplement batteries, or even replace batteries in many applications.