FFB Medium Power Polyester Dielectric Film Cap

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The RoHS compliant FFB series uses a non-impregnated polypropylene or polyester dielectric with a controlled, self-healing process that is specially treated to have a very high dielectric strength in operating conditions up to 105 degrees C.

The polyester dielectric version of this series carries rated DC voltages of 75-400V, with the polypropylene covering voltage ratings of 525 to 1,100V. The polyester dielectric allows for a Max Stray Inductance of 20nH and both versions allow for a 10% cap tolerance.


• Controlled self healing design provides long lifetime and fail-safe operation
• Covers a wide spectrum of voltages (75 to 1100Vdc)
• Can handle multiple voltage surges of up to twice the rated voltage without decreased product lifetime
• Operate to 105 Degrees C
• Two dielectric options
• Can replace banks of electrolytics
• Multiple lead and case options available


• Low reactive power DC filtering
• Inverters
• Power suppliers
• Motors
• Drives
• Electric utilities
• Induction heating
• Hybrid applications