Wet tantalum capacitor offers improved capabilities for avionics and aerospace

A new tantalum-cased wet tantalum capacitor with a glass-to-tantalum hermetic seal, approved to Defense Logistics Agency (DLA) drawing 15005, has been introduced by Vishay. For avionics and aerospace systems, the device is the industry's first wet tantalum capacitor approved to DLA 15005 to combine a reverse voltage of 1.5V at +85C with improved vibration (sine: 50g; random: 27.7g) capability and thermal shock of 300 cycles, says the company. Providing all the advantages of Vishay's SuperTan series devices - while offering improved reverse voltage for higher performance and enhanced vibration and thermal shock capabilities for increased reliability - the DLA 15005 electrolytic capacitor is optimized for timing, filtering, energy hold-up, and pulse power applications in power supplies for space and avionics equipment. The device is initially offered in the axial T4 case size, with current voltage of 75V, high capacitance of 1000µF, and capacitance tolerance of ±10% and ±20% standard at 120Hz and + 25C. The development of additional ratings and case sizes is underway. The DLA 15005 operates over a temperature range of -55C to +85C, to +125C with voltage derating, and provides low maximum ESR of 0.5ohm at 120Hz and +25C. The capacitor features standard tin/lead (Pb) terminations, with RoHS-compliant 100% tin terminations available, says the company.