EFD10, EFD12, EFD15, EFD20, EFD25, EFD30 EFD (Economical Flat Design) cores have been designed to maximize volume in a low profile geometry. EFD cores allow maximum throughput power density with reasonably low mass for board level installation. • EFD cores can be supplied with the center post gapped to a mechanical dimension or an ALvalue. • AL value is measured at 1 kHz, B < 10 gauss. • Weight indicated is per pair or set. Legend: Symbols & Definition Explanation of part numbers: Digits 1 & 2 = product class, 3 & 4 = material grade. Dimensions Row # Part Number Generic Size A B C D E F K Wt. (g) per Set (1) 8978101021 8998101021 8995101021 8978121221 8998121221 8995121221 8978151521 8998151521 8995151521 8978202021 8998202021 8995202021 8978252521 8998252521 8995252521 8978303021 8998303021 8995303021 EFD10 10.50 ± 0.3 0.413 5.20 ± 0.15 0.205 2.70 ± 0.2 0.106 3.75 ± 0.15 0.148 7.65 ± 0.3 0.301 4.55 ± 0.2 0.179 1.45 ± 0.1 0.057 0.90 EFD12 12.50 ± 0.35 0.492 6.20 ± 0.15 0.244 3.50 ± 0.2 0.138 4.55 ± 0.15 0.179 9.00 ± 0.35 0.354 5.40 ± 0.2 0.213 2.00 ± 0.1 0.079 1.80 EFD15 15.00 ± 0.4 0.591 7.50 ± 0.15 0.295 4.65 ± 0.2 0.183 5.50 ± 0.15 0.217 11.00 ± 0.4 0.433 5.30 ± 0.2 0.209 2.40 ± 0.1 0.094 2.80 EFD20 20.00 ± 0.55 0.787 10.00 ± 0.25 0.394 6.65 ± 0.2 0.262 7.70 ± 0.25 0.303 15.40 ± 0.5 0.606 8.90 ± 0.3 0.350 3.60 ± 0.15 0.142 7.00 EFD25 25.00 ± 0.5 0.984 12.50 ± 0.25 0.492 9.10 ± 0.3 0.358 9.30 ± 0.25 0.366 18.70 ± 0.6 0.736 11.40 ± 0.2 0.449 5.20 ± 0.2 0.205 16.00 EFD30 30.00 ± 0.8 1.181 15.00 ± 0.25 0.591 9.10 ± 0.3 0.358 11.20 ± 0.3 0.441 22.40 ± 0.75 0.882 14.60 ± 0.3 0.575 4.90 ± 0.2 0.193 24.00 (2) (3) (4) (5) (6) Fair-Rite Products Corp. PO Box 288, One Commercial Row, Wallkill, NY 12589-0288 122 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] Magnetic Core Parameters Table Continued ... Row # Part Number ∑l /A(cm-1) l (cm) Ae(cm2) Ve(cm3) A min(cm2) AL(nH) (1) 8978101021 8998101021 8995101021 8978121221 8998121221 8995121221 8978151521 8998151521 8995151521 8978202021 8998202021 8995202021 8978252521 8998252521 8995252521 8978303021 8998303021 8995303021 32.70 2.36 0.072 0.171 0.066 530 ±25% 540 ±25% 610 ±25% 25.90 2.84 0.11 0.311 0.108 710 ±25% 730 ±25% 850 ±25% 22.30 3.44 0.154 0.531 0.127 880 ±25% 910 ±25% 1050 ±25% 15.60 4.74 0.31 1.44 0.29 1200 ±25% 1200 ±25% 1400 ±25% 10.40 5.88 0.58 3.32 0.55 2200 ±25% 2250 ±25% 2650 ±25% 11.30 6.93 0.69 4.26 0.66 2800 ±25% 2150 ±25% 2800 ±25% (2) (3) (4) (5) (6) 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] 123