Vishay Offers Solid Tantalum Chip Capacitor With 63V Rating & 22µF Capacitance
Vishay Intertechnology, Inc. announced that it has extended its TANTAMOUNT® Hi-Rel COTS T97 series to offer what it describes as the industry’s first solid tantalum chip capacitor with a 63V rating to meet derating requirements in +28V power supply designs.
According to the company, lacking alternatives for +28V applications, until now designers have been forced to rely on 50V tantalum capacitors, which are unable to meet derating requirements (both military and best-commercial-practices) of 50% of the rated voltage. With a 63V rating and capacitance of 22µF, the new T97 device in the "F" case size is said to solve this long-standing issue by allowing designers to incorporate solid surface-mount tantalum capacitors into their +28V power supply designs while fully complying with derating requirements. In addition to the T97 Hi-Rel series, these ratings are also available in a commercial version, the 597D series.
Featuring a dual anode construction to ensure what is described as the lowest ESR in its class, the T97 series is designed for safety-critical applications such as those found in the military and aerospace industries, including dc-to-dc converters and power distribution in weapons and radar systems, avionics, and space-based electronics. It is claimed that the devices offer designers a wide array of ratings not found in available MIL specifications, combining the flexibility and convenience of a commercial product with the reliability needed in demanding applications.
These conformal-coated capacitors with wrap-around terminations offer high-reliability screening options including Weibull grading, and surge current testing options in accordance with MIL-PRF-55365 in five case sizes. This is said to differentiate the T97 devices from commercial-grade capacitors by featuring the required reliability and surge screening options necessary to ensure performance in Hi-Rel applications while still maintaining a maximum capacitance-voltage product, a figure of merit that measures the amount of energy a capacitor can store, and helps designers choose the best capacitor for their applications.
Part of Vishay’s TANTAMOUNT tantalum capacitor family, the T97 series has a capacitance range of 15 to 1500µF and a voltage range from 4 to 63V. It offers ultra-low ESR values, which range from 0.015 to 0.30Ω at +25°C and 100kHz. Devices in the T97 series operate over a temperature range of -55 to +85°C, +125°C with voltage derating.
Samples and production quantities of the new 63V T97 are available now, with lead times of 7 to 10 weeks, depending on the level of reliability screening requested. Pricing for U.S. delivery starts at $3.10 and varies depending on rating and screening options.
