High voltage tantalum polymer SMD capacitors

03 December 2012

AVX introduced its new high voltage TCJ series 6.8µF/100V (V case) and TCJ series 3.3µF/125V (D case) tantalum polymer SMD capacitors.

The new components offer the benefits of great capacitance, high voltage, and low ESR technology in a small case size. Maintaining 20% recommended voltage derating, TCJ series capacitors significantly extend the usable voltage range. This unique combination enables design engineers to replace up to two of the highest rated component values in this technology by just one component. AVX’s new 100V and 125V tantalum polymer capacitors will be available from early 2013 with engineering samples available upon request.

TCJ series high voltage tantalum polymer SMD capacitors exhibit a benign failure mode eliminating the ignition failures that can occur in standard MnO2 tantalum technology. This makes them more robust and less likely to overload or burn. AVX’s ageing and screening processes of all parts assure high reliability. TCJ series capacitors maintain high reliability exceeding 1% per 1000 hours at 85ºC and full-rated voltage. The SMD technology offers the advantages of small case sizes and low profiles for high-speed pick and place manufacturing processes.

TCJ series capacitors solve the audible noise problems of LCD monitors, which generally use MLCCs and emit noise as a result of capacitance changes due to ambient temperature or voltage fluctuations (piezoelectric effect) causing ripple voltage. Tantalum capacitors don’t have this problem. The devices also reduce the overall number of parts required and increase layout flexibility. Their low profile enables LCD monitors and similar devices to become even thinner and takes up less space than comparable aluminium electrolytic capacitors.

AVX has adopted halogen-free compliance for the new series in accordance with criteria for environmentally responsible product design recently adopted by other major electronics companies.


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