Yageo KEMET floating electrode design with flexible termination system

Yageo KEMET’s Floating Electrode with Flexible Termination capacitor (FF-CAP) combines two existing KEMET technologies - floating electrode and flexible termination. The floating electrode component utilizes a cascading internal electrode design configured to form multiple capacitors in series within a single monolithic structure. This unique configuration results in enhanced voltage and ESD performance over standard capacitor designs while allowing for a fail-open condition if mechanically damaged (cracked). The flexible termination component utilizes a conductive silver epoxy between the base metal and nickel barrier layers of Yageo KEMET’s standard termination system in order to establish pliability while maintaining terminal strength, solderability and electrical performance. Both technologies address the primary failure mode of MLCCs– flex cracks, which are typically the result of excessive tensile and shear stresses produced during board flexure and thermal cycling.

Although neither technology can eliminate the potential for mechanical damage that may propagate during extreme environmental and/or handling conditions, the combination of these two technologies provide the ultimate level of protection against a low IR or short circuit condition.

The FF-CAP complements Yageo KEMET’s Open Mode, Floating Electrode (FE-CAP), Flexible Termination (FT-CAP) and Yageo KEMET Power Solutions (KPS) product lines by providing an ultimate fail-safe design optimized for low to mid range capacitance values. These devices exhibit a predictable change in capacitance with respect to time and voltage and boast a minimal change in capacitance with reference to ambient temperature. Capacitance change is limited to ±15% from −55°C to +125°C.

In addition to commercial grade, automotive grade devices are available which meet the demanding Automotive Electronics Council's AEC–Q200 qualification requirements.

Features

• From −55°C to +125°C operating temperature range
• Superior flex performance (up to 5mm)
• Floating electrode/fail open design
• Low to mid capacitance flex mitigation
• Lead (Pb)-free, RoHS and REACH compliant
• EIA 0603, 0805, 1206, 1210, and 1812 case sizes
• DC voltage ratings of 6.3V, 10V, 16V, 25V, 50V, 100V, 200V, and 250V
• Capacitance offerings ranging from 180pF to 0.22μF
• Available capacitance tolerances of ±5%, ±10%, and ±20%
• Commercial and Automotive (AEC–Q200) grades available
• Non-polar device, minimizing installation concerns
• 100% pure matte tin-plated termination finish allowing for excellent solderability
• SnPb termination finish option available upon request (5% Pb minimum)

Applications

Typical applications include circuits with a direct battery or power source connection, critical and safety relevant circuits without (integrated) current limitation and any application that is subject to high levels of board flexure or temperature cycling. Examples include raw power input side filtering (power plane/bus), high current applications (automobile battery line) and circuits that cannot be fused to open. Markets include consumer, medical, industrial (power supply), automotive, aerospace and telecom.