Fair-Rite Product's Catalog Part Data Sheet, 9077026002 Printed: 2013-07-03 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com Part Number: 9077026002 Frequency Range: MnZn 77 material Description: 77 U CORE Application: Inductive Components Where Used: Closed Magnetic Circuit Part Type: U Cores Mechanical Specifications Weight: 15.000 (g) per Set Part Type Information 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. Fair-Rite Product's Catalog Part Data Sheet, 9077026002 Printed: 2013-07-03 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com Mechanical Specifications Land Patterns V Dim mm A B C D E F G H J K 25.40 12.60 6.60 6.20 12.45 - mm nominal inch tol inch misc. ±0.75 +0.25 -0.50 Min Min - 1.000 0.500 0.250 0.244 0.490 - Min Min - Electrical Specifications Typical Impedance ( ) W X Y Z - - - ref - - Winding Information Turns Wire 1st Wire 2nd Wire Tested Size Length Length - - - - Reel Information Tape Width Pitch Parts 7 '' Parts 13 '' Parts 14 '' mm mm Reel Reel Reel - - - - - Package Size Pkg Size Electrical Properties AL (nH) 940 Min Ae(cm2 ) 0.40000 -1 l/A(cm ) l e (cm) 3 Ve (cm ) (-) Connector Plate 17.60 # Holes # Rows 7.10 - - 2.85000 Legend + Test frequency Preferred parts, the suggested choice for new designs,have shorter lead times and are more readily available. The column H(Oe) gives for each bead the calculated dc bias field in oersted for 1 turn and 1 ampere direct current. The actual dc H field in the application is this value of H times the actual NI (ampere-turn) product. For the effect of the dc bias on the impedance of the bead material, see figures 18-23 in the application note How to choose Ferrite Components for EMI Suppression. A ½ turn is defined as a single pass through a hole. l/A - Core Constant Ae : Effective Cross-Sectional Area L AL - Inductance Factor (__ N 2) N/AWG - Number of Turns/Wire Size for Test Coil l e : Effective Path Length Ve : Effective Core Volume Nl - Value of dc Ampere-turns Fair-Rite Product's Catalog Part Data Sheet, 9077026002 Printed: 2013-07-03 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com See next page for further material specifications. Fair-Rite Product's Catalog Part Data Sheet, 9077026002 Printed: 2013-07-03 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com Fair-Rite Product's Catalog Part Data Sheet, 9077026002 Printed: 2013-07-03 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com