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Wet tantalum capacitors bring down ESR

Posted: 30 Oct 2009     Print Version  Bookmark and Share

Keywords:wet tantalum capacitor  hermetic seal  ESR 

136D tantalum capacitors

Vishay Intertechnology Inc. has released a series of tantalum-cased wet tantalum capacitors with glass-to-tantalum hermetic seals. The 136D devices operate over a temperature range of -55°C to + 85°C, to + 200°C with voltage derating, and provide low ESR down to 0.44Ω at 120Hz and + 25°C.

The 136D capacitors are commercial equivalents of military-style CLR90 and CLR91 devices that meet the performance requirements of military specifications MIL-PRF-39006/30 and 39006/31. The devices are equivalent to former Transistor EQ and ER styles and Kemet T190 and T191 styles.

The wet tantalum capacitors are optimised for timing, filtering, voltage hold-up, and energy storage applications in power supplies and military, avionics, space and oil exploration equipment.

They offer capacitances from 1.7µF to 2,200µF in C, F, T, and K case codes, and capacitance tolerances of ±20 per cent standard at 120Hz and + 25°C, with tolerances of ±10 per cent and ±5 per cent available. The 136D series features standard tin/lead terminations, with RoHS-compliant 100 per cent tin terminations available, and are offered with standard and extended ratings.

Samples and production quantities of the new 136D wet tantalum capacitors are available now, with lead times of eight weeks for larger orders.

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