Power Electronics
High CV Wet Tantalum Capacitors Contend with Aqueous Supercapacitors

High CV Wet Tantalum Capacitors Contend with Aqueous Supercapacitors

AVX Corp. introduced a  series of high CV wet tantalum capacitors that approach the ultra-high volumetric capacitance densities of aqueous supercapacitors, as well as surmount their temperature and soldering limitations. Developed using a novel design process based on high CV tantalum powders, the new TWD DCUltraMax Series High CV Wet Tantalum Capacitors achieve extremely high DC capacitance values and, unlike aqueous supercapacitors, are rated for continuous high temperature operation to at least 85 °C and are compatible with both wave and reflow soldering to a PCB. Currently available with a CV value of 50 mF at 6.3 V, TWD DCUltraMax Series capacitors are ideal for use in a variety of harsh environment applications, including: pulse applications, energy harvesting, energy storage, military electronics, and avionics.

Rated for use in temperatures spanning -55 °C to 85 °C, capacitance and voltage values for the TWD DCUltraMax Series span 50 mF to 150 mF and 6.3 V to 2.5 V, respectively. However, series extensions exhibiting CV values of 150 mF at 2.5 V and rated for maximum operating temperatures as high as 105 °C are currently in development. In addition to high CV, TWD DCUltraMax Series capacitors also exhibit a low DCL of 0.0001 CV, do not require derating, and are available with lead-free or SnPb terminations. Packaged in a DSCC T4 case (AVX's E case), the series measures 26.97 mm long and 9.52 mm in diameter without an insulating sleeve or 10.31 mm in diameter with an insulating sleeve. The terminal welded to each case measures 57.15 mm.

Lead time for the series is 10 to 14 weeks.

 

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