Product category:
Transformers and Inductors
News Release from: Abacus Group | Subject: Epcos polymer multiple-anode tantalum chip caps
Edited by the Electronicstalk Editorial
Team on 06 May 2003
Multiple anodes cut tantalums down to
size
A new series of tantalum polymer multiple-anode capacitors provides higher capacitance values, and handles higher voltages, while maintaining the exceptionally low equivalent series resistance.
A new series of tantalum polymer multiple-anode capacitors from Abacus Polar provides higher capacitance values, and handles higher voltages, while maintaining the exceptionally low equivalent series resistance (ESR) of only one-ninth that of traditional tantalum capacitors The enhanced specification is expected to lead to wider applications as smoothing capacitors in switched mode power supplies, and as bulk capacitors for ICs with high current requirements
This article was originally published on Electronicstalk on 3 Sep 2008 at 8.00am (UK)
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The new series of Epcos polymer multiple-anode tantalum chip capacitors is available from Abacus Polar with capacitance up to 1000uF.
They are available in voltage ratings of the 2.5, 4 and 6.3V and with ESR values below 20mohm.
This lower impedance means that voltage derating is not so much of an issue as with traditional tantalum capacitors, and so a smaller part can be used.
The new capacitors maintain the exceptionally small size and the attractive performance characteristics of the established devices.
They are capable of smoothing up to 5.2A ripple.
Typical applications of such ultra-low ESR capacitors are in the secondary side of DC/DC convertors for basestations and servers etc, and where fast data transfer rates are experienced, such as ADSL, UMTS or with the leading edge microprocessors now operating in gigahertz.
Packaged in SMD case size E (7.3 x 4.3 x 4.1mm), the multiple-anode design of these Epcos capacitors is based on three low-profile polymer-coated tantalum anodes connected in parallel.
This reduces ESR to one-ninth of that of conventional tantalum capacitors, so that single digit ESR values can be obtained.
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