Fair-Rite Product's Catalog Part Data Sheet, 2944778301 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: 2944778301 Frequency Range: Broadband Frequencies 10-300 MHz (44 material) Description: 44 PC BEAD Application: Suppression Components Where Used: Board Component Part Type: PC Beads (Through Hole) Preferred Part: Mechanical Specifications Weight: 6.000 (g) Part Type Information Multiple single turn or multi-turn printed circuit EMI suppression beads are available in two Fair-Rite materials. The broadband 44 material and in the high frequency 52 material grade. -PC Beads can be supplied with lower component heights 'C'. Also, the wire length 'F' can be modified to specific requirements. -Wires are oxygen free high conductivity copper with a lead-free tin coating. Wires on top of the beads are covered with a layer of epoxy. -PC Beads are controlled for impedance 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%. -The PC Beads in 44 material are measured on the 4193A Vector Impedance Analyzer. The 52 PC Beads are tested for impedance on the 4191A RF Impedance Analyzer. -Recommended operating and storage temperature for the PC Beads is -55°C to +125°C. -Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade and last digit 1 = standard wire length 2.4 mm (.095'') minimum. Fair-Rite Product's Catalog Part Data Sheet, 2944778301 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 Dim A B C D E F G H J K mm 11.20 11.20 11.80 2.54 7.60 2.40 0.65 - mm nominal inch tol inch misc. -0.50 -0.50 Max ±0.10 ±0.20 Min - 0.430 0.430 0.464 0.100 0.300 0.095 - Max Min 22 AWG - Electrical Specifications Typical Impedance ( ) 10 MHz 142 25 MHz+ 219 100 MHz+ 338 250 MHz 335 Electrical Properties 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 (-) 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 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, 2944778301 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 See next page for further material specifications. Fair-Rite Product's Catalog Part Data Sheet, 2944778301 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 Fair-Rite Product's Catalog Part Data Sheet, 2944778301 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