Fair-Rite Product s Catalog Part Data Sheet, 2673025301 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: 2673025301 Frequency Range: Lower Frequencies < 50 MHz (73 material) Description: 73 SHIELD BEAD Application: Suppression Components Where Used: Board Component Part Type: EMI Suppression Beads Preferred Part: Mechanical Specifications Weight: .010 (g) Part Type Information Fair-Rite offers a broad selection of ferrite EMI suppression beads with guaranteed minimum impedance specifications. -Beads with a 1 as the last digit of the part number are not burnished. Parts that are burnished to break the sharp edges have a 2 as the last digit. -Upon request beads can be supplied with a Parylene coating. The last digit of the Parylene coated part is a 4 . The minimum coating thickness beads is 0.005 mm (.0002 ). -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 www.fair-rite.com/newfair/pdf/CUP%20Paper.pdf document for How to choose Ferrite Components for EMI Suppression. -Suppression beads 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 typical impedance less 20%. -Single turn impedance tests for 73 and 43 material beads are performed on the 4193A Vector Impedance Analyzer. The 61 material beads are tested on the 4191A RF Impedance Analyzer. Beads are tested with the shortest practical wire length. -Preferred beads are the suggested choice for new designs. Samples are readily available and orders have typically shorter lead times than other beads. For any EMI suppression bead requirement not listed here, feel free to contact our customer service for availability and pricing. -The C dimension, the bead length, can be modified to suit specific applications. -Our Shield Bead Kit (part number 0199000019) contains a selection of these beads. -Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade and last digit 1= not burnished, 2 = burnished and 4 = Parylene coated.Fair-Rite Product s Catalog Part Data Sheet, 2673025301 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 1.25 -0.10 0.047 - - - - - - B 0.80 +0.10 0.033 - Winding Information C 3.80 0.20 0.150 - 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 2.9 Pkg Size 5 MHz 7.1 - 10 MHz+ 10 (-) 25 MHz+ 15 Connector Plate Holes Rows Electrical Properties - - H(Oe) 4.00 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