mechanism. This would make them more suitable to match the increasing life expectancy of power supplies in LED lightning systems.
LCD TV Lower and medium voltage tantalum polymer capacitors are well established in Notebooks and LCD TVs, with D (7343-31) and Y (7343-20) being the favourite case sizes used in DC/DC converters and backlight LED drivers. However, some modern LCD TV architectures with LED backlighting now require a higher output voltage. Typically, a 5V output is dedicated for the microprocessor and the logic circuitry, 12V supplies the TV panel, 24V is used for the audio power amplifiers, and 24V and higher voltages for the backlight.
Telecomms Currently-available 63V rated tantalum polymer capacitors with a capacitance range of 0.47 to 15uF and ESR ratings as low as 100mΩ ideally suit applications in telecommunications systems which often use 48V rails and where long lifetime, low ESR and high ripple current capability are the key requirements.
Summary The increasing capability of tantalum polymer capacitors to operate at higher voltages delivers a combination of highest capacitance and smallest case size at these
March 15th 2012
voltage ranges; this has not previously been possible using other capacitor technologies. These and other benefits, including high stability and excellent reliability, are opening up opportunities for designers to shrink the size of their products and add new functionality in wide range of applications. Additionally, tantalum polymer devices can eliminate the shortcomings associated with conventional capacitor technologies that operate in similar voltage ranges by eliminating the piezo effect and offering better mechanical robustness than ceramic capacitors, achieving higher capacitance and voltage per volume than film capacitors and better reliability and lifetime than aluminium polymer technology devices.
Feature Article Submission Guidelines
Have you got an article which you’d like to see as a feature in this magazine? Go ahead and send it to us, we’d be delighted to include it. The EIU team receives press releases and article submissions on a daily basis. We make a point of ensuring that almost all of the releases we receive appear on the most relevant of our websites –
www.electronicscomponentsworld.com or
www.electronicsproductionworld.com – and from there, published in this magazine. If you’d like to reach a wider audience, contact the EIU team with your submission, including a high resolution photograph where possible. Submissions for technical articles, industry interviews, and company profiles can be sent to
donal@blackdotpublishing.com.
www.electronicscomponentsworld.com /
www.electronicsproductionworld.com EIU 31
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