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FFB44A0336KJC Datasheet(PDF) 1 Page - AVX Corporation |
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FFB44A0336KJC Datasheet(HTML) 1 Page - AVX Corporation |
1 / 4 page Medium Power Film Capacitors FFB (RoHS Compliant) The FFB series uses a non-impregnated metallized polypropylene or polyester dielectric with the controlled self-healing process, specially treated to have a very high dielectric strength in operating conditions up to 105°C. The FFB has been designed for printed circuit board mount- ing. Furthermore, their performances allow to be a very inter- esting alternative to electrolytic technology because they can withstand much higher levels of surge voltage. APPLICATIONS The FFB capacitor is particularly designed for DC filtering, low reactive power. HOT SPOT CALCULATION See Hot Spot Temperature, page 3. θhot spot = θambient + (Pd + Pt) x Rth with Pd (Dielectric losses) = Q x tg δ0 Q x tg δ0 ⇒ [ 1⁄2 x Cn x (Vpeak to peak)2 x f ] x tgδ0 tg δ0 (tan delta) For polypropylene, tg δ0 = 2 x 10-4 for frequencies up to 1MHz and is independent of temperatures. For polyester, tg δ0 values are shown in graph 4 on page 3. Pt (Thermal losses) = Rs x (Irms)2 where Cn in Farad Irms in Ampere f in Hertz Vin Volt Rs in Ohm θ in °C Rth in °C/W WORKING TEMPERATURE (according to the power to be dissipated) -55°C to +105°C LIFETIME EXPECTANCY One unique feature of this technology (as opposed to elec- trolytics) is how the capacitor reacts at the end of its lifetime. Unlike aluminum, electrolytics film capacitors do not have a catastrophic failure mode. Film capacitors simply experience a parametric loss of capacitance of about 2%, with no risk of short circuit. Please note that this is theoretical, however, as the capacitor continues to be functional even after this 2% decrease. 4 PACKAGING MATERIAL Self-extinguishing plastic case (V0 = in accordance with UL 94) filled thermosetting resin. Self-extinguishing thermosetting resin (V0 = in accordance with UL 94; I3F2 = in accordance with NF F 16-101). STANDARDS IEC 61071-1, IEC 61071-2: Power electronic capacitors IEC 60384-16: Fixed metallized polypropylene film dielectric DC capacitors IEC 60384-16-1: Fixed metallized polypropylene film dielectric DC capacitors Assessment level E IEC 60384-17: Fixed metallized polypropylene film dielectric AC and pulse capacitors IEC 60384-17-1: Fixed metallized polypropylene film dielectric AC and pulse capacitors Assessment level E IEC 60384-2: Fixed metallized polyester capacitors |
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