UF & UI Core Features of UF cores and UI cores UF-core and UI-core, these Soft ferrite shapes are available in lamination materials (for stacking), powdered material (typically powdered iron), and ferrite materials. In laminated form, features of UF cores and UI cores are similar to that of the "C" core, and can take full advantage of grain orientation while their laminated counterparts only take about 60% to 80%. UF cores and UI cores possess excellent heat dissipation, and there is lots of room available for lead wires, but self-shielding is poor. UF core, UI core and other “U” cores have two core legs. Coils can be placed over either or both legs. Using coils on separate legs is great for high voltage isolation between coils. The mean turn length of two coils on separate legs (sharing the whole winding window) is smaller than 1 coil on one leg (occupying the whole winding window), hence the two coils connected in series has less winding resistance. Application of UF core and UI core: The U series core features wide distributing permeability and can be chosen and matched according to filter's frequency. As a power ferrite, it is a good choice using in fields of ignitor and energy-saving products. UF core and UI core may be used as “split-core” current transformers, output transformer core, line transformer core, and Inverter core. UF core is mainly application with line filters in color TV sets; UI core: Line filters, Inverter transformers Type Dimensions (mm) A B C Dmin E F UF8.5 8.5±0.2 6.4±0.2 3.45±0.15 3.8 2.3 4.15±0.15 UF8.6 8.6±0.2 6.45±0.2 3.6±0.2 4.0 2.2±0.15 4.2±0.2 UF9.8 9.8±0.3 7.1±0.2 2.9±0.2 4.1 2.9±0.2 4.3±0.2 UF9.8A 9.8±0.3 7.1±0.2 2.7±0.2 4.1 2.8 4.25±0.2 UF10.1 10.1±0.3 7.5±0.25 2.9±0.2 3.9 2.95±0.15 4.5±0.25 UF10.5 10.5±0.3 7.8±0.4 5.0±0.2 5.2 2.4±0.2 5.3±0.3 UF10.5A 10.5±0.4 7.8±0.3 5.0±0.2 5.2 2.5 5.25±0.25 UF12 12.0±0.3 9.2±0.3 3.95±0.15 4.1 3.85 5.05±0.15 UF15A 15.0±0.3 11.4±0.3 6.4±0.2 5.4 4.7 6.5±0.2 UF15.7 15.7±0.6 9.7±0.25 6.0±0.3 6.3 4.5±0.2 6.0±0.3 UF16 16.0 +0.4 10.0±0.3 6.0±0.2 6.7 4.6±0.2 6.0±0.3 I -0.2 UF16A 16.0±0.4 10.0±0.2 6.0±0.2 6.7 4.57 6.0±0.15 UF19 19.7±0.5 18.25±0.25 5.9±0.2 7.4 6.0 12.2±0.2 UF20 19.7±0.3 17.7±0.2 6.0±0.2 7.4 6.0±0.2 11.7±0.2 UI25.4 25.5 +0.4 -0.3 16.25 +0.25 -0 6.25 +0.1 -0.15 12.4 6.45 10.0 +0.3 -0 UF30 30.0±0.6 12.1±0.3 3.2±0.2 17.0 6.2±0.3 6.1±0.3 UF30A 30.0±0.5 12.7±0.15 6.25±0.15 17.3 6.25 6.2 +0.25 -0 UF33 33.0±0.5 13.8±0.15 7.25 +0.2 -0.15 18.0 7.3 6.2 +0.25 -0 UI17 16.3±0.3 8.7±0.3 5.0±0.2 10.6 2.7±0.2 6.4 +0.3 -0.2 2.8±0.2 UI25 25.0±0.5 16.0±0.2 6.2±0.2 12.7 6.2±0.3 10.0±0.3 6.0±0.3 F5(±25%) F7(±25%) F10(±25%) 675 830 1215 960 1500 6.25 +0.1 -0.05 s Core parameter Al(nH/N²) Type C1 (mm-1) Ae (mm2) Ie (mm) Ve (mm3) weight (g/pr.) UF8.5 4.05 7.76 31.4 243 1.2 UF8.6 4.1 7.8 32.2 251.9 1.3 UF9.8 4.3 8.1 34.33 275.9 1.4 1300 1500 1800 UF9.8A 4.46 7.60 34.2 262 1.3 755 885 1095 UF10.1 4.15 8.6 35.7 307 1.5 1005 1100 UF10.5 3.25 12.7 39.9 506.1 2.8 1500 1800 2200 UF10.5A 3.2 12.5 40.1 501 2.5 930 1160 1685 UF12 2.65 15.6 41.3 645 3.2 1200 1420 UF15A 1.71 30.5 52.3 1600 8.0 1840 2380 UF15.7 2.01 24.8 50 1240 6.5 2600 2600 3250 UF16 1.97 27.2 51.9 1412.6 7.4 2600 3300 4000 UF16A 1.97 25.9 51.0 1320 6.9 1610 2075 2700 UF19 2.29 35.3 81.0 2860 15 1590 2080 UF20 2.25 36.0 81.0 2916 15 2100 2750 UI25.4 1.65 38.9 64.3 2500 19 UF30 2.04 38.3 77.9 2985.9 15.3 UF30A 2.06 39.1 80.4 3140 17 2800 UF33 1.59 53.7 85.7 4600 23 3000 UI17 2.58 14.0 36.1 505.4 2.6 1500 UI25 1.68 38.9 65.5 2551 12.8 2500 3800 2600 3080 4300 AL:1kHz,0.5mA,100Ts Copyright 2005 YUXIANG Magnetic Materials Ind. Co.,Ltd.All Rights Reserved. Add:16F1,jinyuan building,NO.57,hubin S.Rd.,Xiamen,China.361004 Tel : (86)592 2225286 (86)592 2219816 (86)592 2217138 Fax: (86)592 2207122 Email : [email protected] [email protected] 6150