Wet tantalum capacitors in surface-mount package

Vishay has released two new wet tantalum capacitors in surface-mountable molded package. Vishay claims, these are industry's first such products. The new devices M34 and M35 are available in the capacitance range of 1.7 µF at 125 V to 220 µF at 6 V, ± 20 % standard capacitance tolerance.

The devices have a higher ripple current capability compared to electrolytic type with similar combinations of capacitance and case size. In addition, the M35 features a 3-V reverse voltage capability at + 85 °C.

These are optimized for power supplies in avionics, military, and space applications that currently use Vishay's ST -T1 (M34) or 135D- C/T1 (M35) case ratings.

The capacitors offer tin/lead or 100 % tin (RoHS- complaint) terminations.

The M34 and M35 operate over a temperature range of -55 °C to + 85 °C, and up to + 125 °C with voltage derating. The devices offer a ± 20 % standard capacitance tolerance at 120 Hz and + 25 °C, with tolerances of ± 5 % and ± 10 % are also available.

The lead-time for these immediately available capacitors is approximately 20 weeks for larger orders.