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Tantalum capacitors target avionics, military apps

Posted: 26 Jun 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Vishay? COTS? T83? tantalum chip capacitor?

Vishay's tantalum capacitors

Vishay Intertechnology Inc. has released the new COTS T83 series of solid tantalum chip capacitors that promise to provide high reliability and a choice of standard and low-ESR values in five different case sizes.

Designed for a variety of avionics and military systems such as radar, missiles, and other weapons systems, Vishay said the new T83 capacitors offer capacitance/voltage values not available in current military specifications, allowing designers to reduce the size, weight, and component count of existing assemblies.

These molded case capacitors are available in five case codes, sizes A through E, per EIA-535BAAC. They provide designers with a high-reliability, screened capacitor that does not require a source control or customer drawing, the company said.

The new devices, which are part of Vishay's Tantamount tantalum capacitor family, have a capacitance range of 0.1&956;F to 330&956;F and voltage range from 4V to 35V. The company said this capacitance/voltage range represents 40 percent more values than existing equivalent military offerings. Devices in the T83 series operate over a temperature range of -55C to 125C. Part number coding allows designers to select termination plating, reliability screening, surge current test conditions and ESR level.

According to Vishay, the option of low ESR values, which extend down to 0.1 ohm at 25C and 100kHz, allows for more efficient filtering in critical DC/DC conversion applications, while the T83's high ripple current handling capability is key for ensuring stable output voltages.

Their extended capacitance/voltage valuescoupled with reliability, surge current, and ESR optionsmake the T83 tantalum capacitors a flexible solution for a wide variety of application and performance requirements. The T83 will additionally help reduce the size and weight of end products because of their small case sizes and by enabling designs that require fewer components, the company explained.

The surface-mount T83 capacitors are available in standard EIA tape-and-reel packages that are compatible with high-volume automatic pick-and-place equipment. Sn/Pb terminations are standard, but tin and gold terminations (RoHS-compliant) are available. Weibull grading and surge-current test options per MILPRF55365 are available.

Samples and production quantities of the new T83 solid tantalum chip capacitors are available, with lead times of 8 to 10 weeks for larger orders.

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