AVX Corporation has a new high-temperature wet electrolytic tantalum capacitor series. Created for use at 230C, the new TWA-X Series wet electrolytic tantalum capacitors highlight a high-capacitance cathode system that delivers high CV performance in standard case sizes and a hermetically-sealed, welded tantalum can and header assembly, providing robust resistance against mechanical shock and high-frequency vibration. Ideal for use in industrial, defence, aerospace, and oil drilling equipment, the series of capacitors are also mechanically tested in accordance with MIL-STD-202 and offer one of the highest capacitance available for the longest duration – up to 400μF for 500 hours of operation at 230C. They are currently available in DSCC case size T4 (AVX case size ‘E’) with two initial ratings: 400μF/100V and 330μF/125V.

“Our new TWA-X Series offers high-temperature versions of conventional wet electrolytic tantalum capacitors and is especially well suited for use in oil drilling and other high-temperature, harsh environment applications,” said Mitch Weaver, a member of the technical staff at AVX.

The axial-leaded T4 capacitors measure 26.97mm in length and 10.31mm in diameter with an insulating sleeve or 9.52mm in diameter without the insulating sleeve. The axial leads are offered in RoHS-compliant, lead-free compatible matte tin or in 60/40 tin/lead and measure 57.15mm in length.

The 400μF/100V capacitors are rated for 2,000 hours at 200C when derated to 60V and for 500 hours at 230C when derated to 25V. The 330μF/125V parts are rated for 500 hours at 200C when derated to 75V and for 500 hours at 230C when derated to 40V.