Small Wet Tantalum Capacitors Offer High-Relaiability For Avionics And Aerospace


Vishay Intertechnology recently introduced a new tantalum-cased wet tantalum capacitor. with a glass-to-tantalum hermetic seal that is claimed to be the industry’s first in the compact 9×7.1×7.4 mm C case code. The capacitors serve as a replacement for axial leaded through-hole capacitors, reduce PCB space, and provide a more reliable alternative to SMD devices for timing, filtering, energy hold-up, and pulse power applications in power supplies for space and avionics equipment.

The T22 capacitors are designed for avionics and aerospace systems featuring a reverse voltage of 1.5 V at +85 °C with increased thermal shock capability of 300 cycles in a surface-mount package. A high vibration (sinusoidal: 50 g; random: 27.8 g) capability ensures high-reliability design.

Key features include voltage ratings from 50 VDC to 125 VDC, capacitance from 10 μF to 68 μF, and capacitance tolerance of ± 10 per cent and ± 20 per cent standard. The device operates over a temperature range of -55 °C to +85 °C, to +125 °C with voltage derating, and provides maximum ESR down to 1.50 Ω at 120 Hz and +25 °C. The capacitor features standard tin/lead (Sn/Pb) terminations, with RoHS-compliant 100 per cent tin terminations available.


The T22 capacitors are available now in samples and production quantities.

Click here to view full Press release.

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