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Extending the Life Cycle of Electrolytic Capacitors


In September, the TDK Corporation introduced a new series of surface-mount electrolytic capacitors with an average life rating of approximately 4,000 hours (Figure 1). That number is twice as long as typical electrolytic capacitors with average life ratings of approximately 2,000 hours. Along with a greater life rating, there is also a substantial drop in equivalent series resistance (ESR), allowing for a much greater ripple current. These characteristics are the result of a new hybrid-polymer technology that the parts contain.

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