Fair-Rite Product s Catalog Part Data Sheet, 2631540202 Printed: 2010-11-09 Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288 Phone: (888) 324-7748 www.fair-rite.com Part Number: 2631540202 Frequency Range: Lower & Broadband Frequencies 1-300 MHz (31 material) Description: 31 ROUND CABLE CORE Application: Suppression Components Where Used: Cable Component Part Type: Round Cable EMI Suppression Cores Preferred Part: Mechanical Specifications Weight: 8.300 (g) Part Type Information Fair-Rite offers a broad selection of ferrite EMI suppression cable cores in several materials with guaranteed minimum impedance specifications. -All cable cores have been burnished to remove the sharp edges. -The column H (Oe) gives for each cable core 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-turns) product. For the effect of the dc bias on the impedance of the core material, see the figures 18-23 in the application note How to choose Ferrite Components for EMI Suppression . -Suppression cable cores are controlled for impedances only. The impedances listed are typical values. Minimum impedance values are specified for the + marked frequencies. The minimum guaranteed impedance is the listed impedance less 20%. -Single turn impedance tests for 31, 43 and 46 material cores are performed on the 4193A Vector Impedance Meter. The 61 material parts are tested on the 4191A RF Impedance Analyzer. Cores are tested with the shortest Practical wire length. -Performance curves for individual components can be viewed by clicking on the part number in the chart. -For smaller suppression parts, refer to the EMI Suppression Bead section of our catalog. -For any cable suppression core not listed here, feel free to contact our customer service group for availability and pricing. -The C dimension, the core length, can be modified to suit specific applications. -Our Expanded Cable and Suppressor Kit (part number 0199000005) Contains a selection of these suppression cores. -Explanation of Part Numbers: Digits 1 & 2 =product class, 3 & 4 material grade and last digit 2 = burnished.Fair-Rite Product s Catalog Part Data Sheet, 2631540202 Printed: 2010-11-09 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 W X Y Z Dim mm mm nominal inch ref tol inch misc. - - - - - A 14.30 0.45 0.562 - - - - - - B 6.35 0.25 0.250 - Winding Information C 13.80 -0.70 0.530 - Turns Wire 1st Wire 2nd Wire D - - - - E - - - - Tested Size Length Length F - - - - - - - - G - - - - H - - - - Reel Information J - - - - Tape Width Pitch Parts 7 Parts 13 Parts 14 K - - - - mm mm Reel Reel Reel Electrical Specifications - - - - - Typical Impedance ( ) Package Size 1 MHz 17 Pkg Size 5 MHz 44 - 10 MHz+ 58 (-) 25 MHz+ 88 Connector Plate 100 MHz+ 140 Holes Rows 250 MHz 160 - - Electrical Properties H(Oe) .43 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 turn is defined as a single pass through a hole. l/A - Core Constant l : Effective Path Length e A : Effective Cross-Sectional Area V : Effective Core Volume e e L A - Inductance Factor ( ) Nl - Value of dc Ampere-turns 2 N L N/AWG - Number of Turns/Wire Size for Test Coil