KEMET C0805X399C1HAC7800

KEMET's ultra-stable X8R dielectric Flexible Termination (FT-CAP) MLCCs feature a unique flexible termination system integrated with KEMET's standard termination materials. Conductive silver epoxy is used between the base metal and nickel barrier layers of KEMET's standard termination system to achieve flexibility while maintaining termination strength, solderability, and electrical performance. This technology is designed to address the primary failure mode of MLCCs — flex cracking — which is typically caused by excessive tensile and shear stresses generated during board flexure and thermal cycling. The flexible termination technology suppresses the transfer of board stress to the rigid ceramic body, thereby reducing flex cracks that can lead to low insulation resistance or short-circuit failures.

Combined with the stability of KEMET's ultra-stable high-temperature dielectric technology, these flex-resistant devices are RoHS-compliant, offer up to 5mm flex capability, and support a maximum operating temperature of 150°C. The ultra-stable X8R dielectric delivers the same temperature performance as conventional X8R, but without capacitance loss due to applied DC voltage. These devices exhibit no capacitance change with voltage and minimal capacitance variation with ambient temperature. They also serve as drop-in replacements for high-capacitance, large-footprint devices that cannot provide capacitance stability. From -55°C to +150°C, capacitance change with temperature is limited to ±15%.

While this technology cannot eliminate mechanical damage that may occur under extreme environmental and operating conditions, it provides superior flex performance compared to standard termination systems. FT-CAP complements KEMET's open-mode, Floating Electrode (FE-CAP), Floating Electrode with Flexible Termination (FF-CAP), and KEMET Power Solutions offerings.

In addition to commercial-grade products, automotive-grade devices are available that meet the stringent AEC-Q200 qualification requirements of the Automotive Electronics Council.

• Operating temperature range: -55°C ~ +150°C
• Excellent flexure performance (up to 5mm)
• Lead-free, RoHS and REACH compliant
• Available in EIA 0603, 0805, 1206, 1210, and 1812 case sizes
• DC voltage ratings: 10V, 16V, 25V, 50V, and 100V
• Capacitance range: 0.5pF to 0.22μF
• Available capacitance tolerances: ±0.10pF, ±0.25pF, ±0.5pF, ±1%, ±2%, ±5%, ±10%, and ±20%
• Ultra-low ESR and ESL
• High thermal stability
• High ripple current capability
• No capacitance change under rated DC voltage
• Non-polarized device, reducing mounting concerns
• Available in commercial and automotive grade (AEC-Q200)
• 100% pure matte tin termination for excellent solderability
• SnPb termination (minimum 5% Pb) available upon request

Typical applications include decoupling, bypassing, filtering, and transient voltage suppression in critical and safety-related circuits (without integrated current limiting), including those subject to high board flex or thermal cycling.