Capacitors for power electronics applications in unmanned vehicles introduced by Cornell Dubilier
LIBERTY, S.C. –Power electronics specialist Cornell Dubilier Electronics Inc. in Liberty, S.C. is introducing the 85-degree Celsius THA series Thinpack capacitors for unmanned vehicles that measure 8.2 millimeters thick, and 9 millimeters for the 105 C THAS series.
Potential applications include any circuits that require high capacitance bulk storage and filtering in a low-height profile. This includes: tablets, laptops, instrumentation, commercial-grade LED driver modules, compact power supplies, drones and RPVs, set-top boxes, 1U rack-mounted devices and other thin, high-performance devices.
This is comparable in height to V-chip electrolytics, tantalums, and board-mounted axials, yet offer much higher bulk-storage energy density.
One THA/THAS capacitor can replace an array of SMT, axial, or radial aluminum electrolytic or solid tantalum capacitance arrays. That substitution can enable engineers to design smaller products with simplified assembly and higher reliability.
The THA/THAS series design is based on Cornell Dubilier's experience with MIL-grade flat electrolytics. Reengineered to be thinner and more cost effective, it is a good fit for many of today's high-performance electronics.
Unlike traditional cylindrical electrolytics, a THA/THAS capacitor has a sealed, laser welded aluminum case that eliminates the need for space wasting end seal gaskets. The design includes a valve to vent hydrogen gas, reducing swelling by relieving internal pressure.
In most applications, there are significant cost, weight, and space savings vs. a comparably rated bank of SMT or axial aluminum electrolytic capacitors. This includes requiring about 70 percent less board space than alternatives, resulting in a reduction of overall size and weight of the finished board.
The use of one component versus many and fewer connections improves overall circuit reliability. The THA is rated at 3,000 hours of life at 85 C; and the THAS is rated at 3,000 hours of life at 105 C. Values from 140 microfarads at 450 volts DC to 18,000 microfarads at 10 volts DC, with 72 capacitance/voltage combinations are available for each series.
For more information contact Cornell Dubilier online at www.cde.com/THA/THA.htm.
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