The U core offers an economical core design with a nearly uniform cross-sectional area. In a power ferrite material they are frequently used in output chokes, power input filters and transformers for switched-mode power supplies and HF fluorescent ballasts. • These U cores have the same minimum cross-sectional area as the listed effective cross-sectional area. • AL value is measured at 1kHz, < 10 gauss. • For any U core requirement not listed in the catalog, please contact our customer service group for availability and pricing. • Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade. • Weight indicated is per pair or set. Legend: Symbols & Definition Explanation of part numbers: Digits 1 & 2 = product class, 3 & 4 = material grade. MnZn 77 material Row # Part Number Fig. A B C D E F Wt. (g) per Set (1) 9077002002 1 1 1 _ 17.50 (4) 9077024002 1 _ 20.00 (5) 9277023002 2 _ 28.00 (6) 9277002002 2 _ 32.00 (7) 9277024002 3 9277008002 3 (9) 9277010002 3 (10) 9277012002 3 26.60 ±0.5 1.047 35.30 ±0.60 1.390 35.30 ±0.60 1.390 35.30 ±0.60 1.390 35.00 (8) 2.30 Min 0.090 Min 12.45 Min 0.490 Min 12.45 Min 0.490 Min 12.45 Min 0.490 Min 7.25 Min 0.285 Min 7.25 Min 0.285 Min 12.50 Min 0.492 Min 18.65 Min 0.735 Min 18.65 Min 0.735 Min 18.65 Min 0.735 Min 15.00 9077025002 1.30 Min 0.051 Min 6.20 Min 0.244 Min 9.40 Min 0.370 Min 12.55 Min 0.494 Min 10.00 Min 0.394 Min 14.35 Min 0.565 Min 9.40 Min 0.370 Min 7.80 Min 0.307 Min 10.95 Min 0.430 Min 15.75 Min 0.620 Min _ (3) 4.05 ±0.20 0.160 6.60 -0.50 0.250 6.60 -0.50 0.250 6.60 -0.50 0.250 10.00 -0.50 0.385 10.00 -0.50 0.385 10.25 -0.50 0.394 11.70 ±0.25 0.460 11.70 ±0.25 0.460 11.70 ±0.25 0.460 1.40 9077026002 4.45 +0.25 0.180 12.60 +0.25 0.500 15.75 +0.25 0.625 18.90 +0.25 0.750 15.75 +0.25 0.625 20.20 ±0.15 0.795 18.50 ±0.15 0.729 17.45 ±0.15 0.687 20.50 +0.25 0.812 25.40 ±0.15 1.000 _ (2) 8.90 -0.50 0.340 25.40 ±0.75 1.000 25.40 ±0.75 1.000 25.40 ±0.75 1.000 26.50 ±0.70 1.045 26.50 ±0.70 1.045 31.40 ±0.60 1.237 41.15 ±0.75 1.620 41.15 ±0.75 1.620 41.15 ±0.75 1.620 Fair-Rite Products Corp. PO Box 288, One Commercial Row, Wallkill, NY 12589-0288 128 Phone: (888) FAIR RITE / (845) 895-2055 • Fax: (888) FERRITE / (845) 895-2629 • (888) 324-7748 (888) 337-7483 E Web: www.fair-rite.com -mail: [email protected] 50.00 54.00 66.00 Table Continued ... Row # Part Number ∑l/A(cm-1) l (cm) Ae(cm2) Ve(cm3) AL(nH) (1) 9077002002 9077026002 9077025002 9077024002 9277023002 9277002002 9277024002 9277008002 9277010002 9277012002 16.80 2.08 0.124 0.257 695 Min 17.60 7.10 0.40 2.85 940 Min 20.70 8.40 0.40 3.36 790 Min 23.90 9.60 0.40 3.88 695 Min 11.60 7.80 0.67 5.20 1390 Min 13.90 9.50 0.68 6.50 1180 Min 11.20 9.30 0.83 7.70 1425 Min 10.50 10.30 0.98 10.10 1575 Min 11.80 11.60 0.98 11.30 1425 Min 13.80 13.50 0.98 13.20 1255 Min (2) (3) (4) (5) (6) (7) (8) (9) (10) e Fair-Rite Products Corp. PO Box 288, One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) FAIR RITE / (845) 895-2055 • Fax: (888) FERRITE / (845) 895-2629 • (888) 324-7748 (888) 337-7483 E Web: www.fair-rite.com -mail: [email protected] 129