Fair-Rite Product s Catalog Part Data Sheet, 2873002302 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: 2873002302 Frequency Range: Suppression Applications for Lower Frequencies < 50 MHz (73 material) Description: 73 MULTI-APERTURE CORE Application: Suppression Components Where Used: Board Component Part Type: Multi-Aperture cores Mechanical Specifications Weight: .100 (g) Part Type Information Multi-aperture cores are used in suppression applications and in balun (balance-unbalance) and other broadband transformers. They are also employed in airbag designs to prevent accidental activation. -All multi-aperture cores are supplied burnished. -Multi-aperture cores in 73 and 43 materials are controlled for impedance only. The 61 NiZn material is controlled for both impedance and AL value. The high frequency 67 material is controlled for AL value. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%. -Multi-aperture cores in 73 and 43 material are measured for impedance on the 4193A Vector Impedance Analyzer. The 61 and 67 multi-aperture cores are tested on the 4291A Impedance Analyzer. All impedance measurements are performed with a single turn to both holes, using the shortest practical wire length. -The 61 and 67 material multi-hole beads are tested for AL value. The test frequency is 10 kHz at < 10 gauss. The test winding is five turns wound through both holes. -For any multi-aperture requirement not listed here, feel free to contact our customer service group for availability and pricing. -Our Multi-Aperture Core Kit (part number 0199000036) is available for prototype evaluation. -Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade last digit 2 = burnished.Fair-Rite Product s Catalog Part Data Sheet, 2873002302 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 W X Y Z Dim mm mm nominal inch ref tol inch misc. - - - - - A 3.45 0.25 0.136 - - - - - - B 2.35 0.25 0.093 - Winding Information C 2.00 0.15 0.079 - Turns Wire 1st Wire 2nd Wire D - - - - E 1.45 0.10 0.057 - Tested Size Length Length F - - - - - - - - G - - - - H 0.75 +0.25 0.034 - Reel Information J - - - - Tape Width Pitch Parts 7 Parts 13 Parts 14 K - - - - mm mm Reel Reel Reel Electrical Specifications - - - - - Typical Impedance ( ) Package Size 10 MHz 35 Pkg Size 25 MHz+ 44 - (-) Electrical Properties Connector Plate Holes Rows - - 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