Chip capacitors for military and aerospace systems

1st May 2014
Source: Vishay
Posted By : Nat Bowers
Chip capacitors for military and aerospace systems

 

Available with high-reliability screening and surge current testing options in accordance with MIL-PRF-55365, Vishay has introduced the T42 series Hi-Rel series of TANTAMOUNT surface-mount solid tantalum molded chip capacitors for military and aerospace applications.

Suited for filtering, decoupling, and energy storage applications in weapons and radar systems, avionics and space-based electronics, the T42 series combines a built-in fuse for fail-safe operation with high capacitance and voltage ratings and low ESR down to 80mΩ at +25°C and 100kHz. To protect against catastrophic failures in these safety-critical applications, the devices' built-in fuse guarantees protection at 5 A for 10 ms and is optimised to ensure activation while avoiding false triggering. The T42 employs a multi-anode "mirror" structure that reduces ESR by at least 50%. Each internal anode within the device has a dedicated fuse, allowing unaffected anodes to maintain capacitance in the unlikely event of a failure. Depending on the application, this fault-tolerant design allows for a degraded mode of operation rather than a complete loss of functionality.

Offered in the M2 case code, T42 series capacitors utilise Vishay's patented leadframeless multi-array packaging (MAP) technology for increased volumetric efficiency. Built on a glass-reinforced resin base, the device eliminates the problematic J-lead construction and associated current-loops, thereby reducing ESL by two thirds that of traditional capacitors. The result is high capacitance of 10-470 μF, with tolerances of ±10 and ±20%, and voltage ratings of 16-75V DC. With higher capacitance than traditional devices, the capacitors reduce the overall component count and simplify designs.

The T42 series offers an operating temperature range from -55 to +85°C (+125°C with voltage derating) and maximum ripple current of 0.7-1.8A. RoHS-compliant, the devices are available with 100% tin or tin/lead terminations. Samples and production quantities of the T42 series are available now, with lead times of 14 weeks for larger orders.

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