High-voltage chip capacitor resists fracture
22 March 2006
Passive Components
AVX has expanded its innovative Flexiterm series of capacitors by adding a high-voltage MLC chip for applications requiring 600 V to 3000 V. The capacitor provides high value, low leakage and small size in a rugged package that the company says will not crack under extreme board flexure or temperature damage cycle conditions.
AVX's new Flexiterm V+ is designed for applications such as snubbers in high frequency power converters, resonators in SMPS, and high voltage coupling/DC blocking because it exhibits low ESR at high frequency.
Flexiterm is a soft termination system that allows greater than two times the amount of board flexure when compared to standard termination systems. Further enhancing the capabilities of a standard MLCC, it was developed as an additional flexible termination layer added to the component to ensure electrical integrity is maintained when external forces are applied and to prevent failures in the system due to cracking.
Since the start of high voltage ceramic capacitor production, AVX capacitors in the 1000 V to 3000 V range have used the multilayer series capacitor (MLSC) technology because it splits the voltage distribution in the component, reducing electric field stresses. Resistance to mechanical failure can be attributed to Flexiterm's ability to reduce the transfer of mechanical stress exerted on the component body.
Flexiterm V+ is available in case sizes from 1206 to 2220, with voltages ranging from 600 to 3000 V. They are available in a RoHS-compliant matte tin and tin-lead finish.
www.avx.com
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