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FFV34EK Datasheet(PDF) 1 Page - AVX Corporation |
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FFV34EK Datasheet(HTML) 1 Page - AVX Corporation |
1 / 3 page 18 ■ JUNE 2015 Medium Power Film Capacitors FFV3 (RoHS Compliant) The series uses a metallized polypropylene or polyester dielec- tric, with the controlled self-healing process, specially treated to have a very high dielectric strength in operating conditions up to 105°C. This is a dry solution for polypropylene and dry or wet for polyester. The FFV3 has been designed for printed circuit board mounting. DC FILTERING 2 4 1 3 1.2 B 30 25 1.2±0.1 4.5±1 B A General tolerance: 0.5 1 2 3 4 0.6 A Plastic Case 40 40 16 36 0.8±0.1 APPLICATIONS The FFV3 capacitors are particularly designed for DC filter- ing, low reactive power. 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 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. 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). HOT SPOT CALCULATION See Hot Spot Temperature, page 3. θhot spot = θambient + (Pd + Pt) x (Rth + 7.4) θhot spot = θcase + (Pd + Pt) x Rth with Pd (Dielectric losses) = 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 Rth : Rth case/hot spot in °C/W |
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