Tantalum capacitors achieve supercapacitor CV values

AVX has released a new series of axial leaded, hermetically sealed wet electrolytic tantalum capacitors capable of achieving supercapacitor CV values in high temperature environments up to 125°C.

The TWD High Temp Max Cap (HTMC) Series capacitors are able to deliver both electrical and mechanical stability, and have been able to achieve extended operational lifetimes of up to 10,000 hours at 85°C, rated voltage.

Combined with extremely high capacitance values spanning 25mF to 50mF and a wide operating temperature range spanning -55°C to +125°C, the endurance of the TWD HTMC Series capacitors makes them suitable for use in DC hold-up and low frequency pulse circuitry in avionics, defence, specialised industrial, and other high reliability applications that require high capacitance at higher temperatures and for longer lifetimes than EDLC (electric double-layer capacitor) supercapacitor technologies can currently deliver.

Packaged in T4 axial leaded cases, TWD HTMC Series capacitors are currently available rated for 50mF, 6.3V and 25mF, 10V, -55°C to +125°C, and 10,000 hours at 85°C and rated voltage.

In addition, a third rating of 150mF, 2.5V, -55°C to +125°C, and 2,000 hours at 85°C and rated voltage is in active development. TWD HTMC Series capacitors are available with a ±10% and ±20% capacitance tolerance, with and without an insulating sleeve, and with either Sn/Pb (60/40) plated or pure matte tin terminations.

The series is also lead-free reflow compatible and RoHS compliant, and is suitable for automatic mounting and soldering.