Tantalum capacitors with supercap CV values
15 June 2015
Passive Components
AVX has released a new series of axial leaded, hermetically sealed wet electrolytic tantalum capacitors that achieve supercapacitor CV values in high-temperature environments. Utilising high-CV tantalum powders and a well established wet tantalum design, TWD High Temp Max Cap (HTMC) series capacitors achieve extended operational lifetimes of up to 10 000 hours.
Combined with extremely high capacitance values spanning 25 mF to 50 mF, and a wide operating temperature range spanning -55°C to +125°C, the extended endurance of these components makes them ideal 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, the capacitors are currently available rated for 50 mF, 6,3 V and 25 mF, 10 V, -55°C to +125°'C, and 10 000 hours at 85°C and rated voltage. Additionally, a third rating of 150 mF, 2,5 V, -55°C to +125°C, and 2000 hours at 85°C and rated voltage is in active development.
The TWD HTMC series is 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.
For more information contact Yolandi de Beer, Avnet South Africa, +27 (0)11 319 8600, [email protected], www.avnet.co.za
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