AVX Corp., a leading manufacturer of advanced passive
components and interconnect solutions, has expanded its wide range of SMD
tantalum polymer capacitors to deliver industry’s highest CV rating in a low
profile package. Ideal for small power modules and handheld devices, the TCN Series
tantalum polymer capacitors use an ‘undertab’ design to maximize volumetric
efficiency, enabling these devices to provide 150µF/6.3V rating in T and L case
sizes measuring only 3.5mm x 2.8mm with a profile of only 1.2mm and 1.0mm
respectively. In addition, the TCN Series polymer capacitors are suitable for
continuous operation with just 20% voltage derating due to their reduced
ignition failure mode and surge current robustness.
“The 150µF/6.3V tantalum polymer capacitor is a
favorite choice of mobile phone manufacturers for power module stabilization
applications. The new TCN Series devices continue the miniaturization trend in
electronic devices, allowing designers to produce smaller, thinner mobile
devices or to increase functionality within the same product dimensions,”
said Dan Lane,
marketing manager at AVX.
Tantalum capacitors in general are more stable against
changes in operational temperature and applied voltage than comparable
multilayer ceramic capacitors (MLCCs). The TCN Series polymer tantalum
capacitors are RoHS-compliant and contain no halogens, which top equipment
manufacturers are anxious to eliminate. In addition, the conductive polymer
cathode is inherently low oxygen bearing, which helps to negate ignition
failures – unlike other tantalum capacitor technologies that can be susceptible
to this failure mode.
The first TCN Series parts that have been released include
the 150uF 6.3V devices in two 3528 case sizes – L case with a profile of 1.0mm
and the T case which measures 1.2mm high. Additional high volumetric efficiency
TCN Series ‘undertab’ polymer capacitors will be released during 2011.