Comments Tomas Zednicek, Worldwide Technical Marketing Manager: “Common demands from designers of switch mode power supplies, microprocessors, and general digital circuit applications are the reduction of noise while operating at higher frequencies – together with a downsizing of power supplies. This requires components with low Equivalent Series Resistance (ESR), high capacitance and high reliability. To achieve this, multi-anode internal designs have been used in applications such as telecoms infrastructure, networking, servers and even military/aerospace projects.”
The mirror anode configuration is also better for thermal power dissipation; hence higher ripple current can be achieved using only one capacitor. This allows downsizing of the power supply without compromising the output current ratings.
Multianode mirror tantalums are available as D case devices within AVX’s existing TPM series. Complying with RoHS requirements, TPM capacitors are designed for 3x reflow, 260degC peak temperature lead-free assembly systems, and feature an operating temperature range of between -55degC and +125degC.
Mirror TPM capacitors have a capacitance range of 10 to 1000F, are rated at 2.5 to 50V and have an ESR range of 25-140m. High voltage (35 and 50V) devices will be especially attractive for telecommunication applications where design height is becoming an important parameter: capacitance values 10-22F, ESR 65-140m on a single 35-50V capacitor are difficult to attain within the 3.1mm maximum height using any other technology.