Chip on Flex filter connector survives 1000 thermal cycles

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Chip on Flex filter connector survives 1000 thermal cyclesITT Electronic Components says it has tested its Chip on Flex (CoF) filter connector technology to 1000 cycles of thermal shock from -55 to +125degC as per MIL-STD-1344. Unlike the ceramic planar array block capacitor used in conventional filter connectors, the Cannon CoF connector utilises a state-of-the-art flexible circuit in which individual chip capacitors are surface-mounted on a pad adjacent to the feed-thru contact.

Keith Teichmann, director of product management for ITT Electronic Components, states: "We have eliminated the stress points that impact performance in shock and vibration environments by flex-mounting the feed-thru contacts rather than soldering them directly to the capacitor. While other filter connectors have typical lifespans of around 50 cycles, this robust design is capable of a life cycle 20 times that, making it the only military filter connector in the industry to pass 1000 hours of thermal shock testing."

The robust connector is also claimed to provide superior reliability and protection in harsh environments. In MIL-DTL-38999 configurations, the CoF connector has passed MIL-STD-1344 and MIL-DTL-38999 Series III testing for mechanical shock, random vibration, humidity and high altitude. The connector features a voltage rating of 200V DC and 120V AC rms at 400Hz. Current ratings are 15, 7.5 and 5.0A for sizes 16, 20 and 22, respectively.

CoF connectors are suitable for high-reliability military, aerospace and industrial applications including integrated avionics, radio and navigation systems, fire control devices, electronic counter measures, satellite communications and data transmitters.

Typical pricing for the CoF filter connector ranges from $125 to $175 each in quantities of 100. Lead time is from 12-14 weeks.

09 November 2007

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