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APEC 2017: Cornell Dubilier Touts Hermetically-Sealed Aluminum Electrolytic Capacitors

28 March 2017

Cornell Dubilier Electronics Inc. showcased its line of aluminum electrolytic capacitors at this week’s Applied Power Electronics Conference and Exposition (APEC) in Tampa, Fl.

CDE is touting its ability to deliver what it claims to be the world’s only hermetic aluminum electrolytic capacitor with glass-to-metal seal. Compared to wet tantalum capacitors, the MLSH 125 electronic component has superior capacitance retention at -55 degrees Celsius and has been tested to last 5,000 hours at full operating voltage of 125 degrees Celsius.

The electrolytic capacitors are packaged in stainless steel case capable of withstanding 80,000 feet in altitude and replaces three or more axial wet tantalum capacitors in parallel. Unlike tantalum capacitors that require voltage derating at temperatures above 85 degrees Celsius, the MLSH capacitors are rated for full operating voltage at 125 degrees Celsius.

The 40 VDC version of the MLSH 125 aluminum electrolytic capacitor and the 300 VDC version of the MLSG flatpack capacitor from Cornell Dubilier. Source: Electronics360The 40 VDC version of the MLSH 125 aluminum electrolytic capacitor and the 300 VDC version of the MLSG flatpack capacitor from Cornell Dubilier. Source: Electronics360

The capacitors are aimed at applications such as inverters, wind/solar power, electric vehicles, power suppliers, motor drives, HVAC, motors, welding, aerospace, telecom, medical equipment and UPS systems where electronic components are needed to withstand elevated temperatures.

Other aluminum electrolytic capacitors on display included the MLSG flatpack line featuring 5,000 hours of DC life and the ability to withstand more than 80,000 feet of altitude while operating efficiently at 125 degrees Celsius down to negative 55 degrees Celsius.

A complete collection of the capacitors and other electronic components on display at APEC 2017 from Cornell Dubiler. Source: Electronics360A complete collection of the capacitors and other electronic components on display at APEC 2017 from Cornell Dubiler. Source: Electronics360

Recently, Cornell Dubilier introduced a new line of axial-lead aluminum electrolytic capacitors for applications that require high performance under all operating conditions. The AXLH line of capacitors operate up to 2,000 hours at full-rated voltages and at 150 degrees Celsius. These devices are targeted for the military, aerospace, off-road vehicles and infrastructure system electronics.

To contact the author of this article, email Peter.Brown@ieeeglobalspec.com


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