New Hermetically Sealed Capacitors For Military/Aerospace

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Cornell Dubilier Electronics announced it has expanded its hermetically sealed aluminum electrolytic capacitor line to higher voltages up to 250 Vdc. The capacitors’ glass-to-metal seal prevents drying out of the electrolyte, which increases the lifespan to 5,000 hours to meet the most demanding applications for military and aerospace.

The firm expects the MLSH Slimpack series to replace parallel and series banks of wet tantalum capacitors for new and existing designs, especially where bulk storage is paramount.

The new hermetically sealed aluminum electrolytic capacitors are now available in nine values, from 120 µF to 3,200 µF, with ratings up to 250 Vdc.

The devices measure 1.0” x 1.5” x 0.5”, weigh less and have more capacitance than a parallel bank of three or more wet tantalum capacitors. High rated capacitance is maintained at temperatures as low as -55 °C, a key requirement for power supplies used in military and aerospace applications. Top-end temperature rating is 125 °C, according to the company.

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The devices feature rugged stainless steel cases with a vibration rating of 80g. In most applications, they also claim to offer significant cost and space savings vs. a comparably rated bank of wet tantalum capacitors. The new high-voltage MLSH Slimpacks eliminate the need for series banking.

CDE’s hermetic MLSH Slimpack aluminum electrolytic capacitors are available from Digi-Key, Mouser and TTI.

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