2744555577..

The 2744555577 is a 44 SM Differential-mode Bead controlled for impedance limits only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed value less 20%. SM beads in 73, 43 and 44 materials are measured for impedance on the 4193 vector impedance analyser. The 52 and 61 SM beads are tested for impedance on the 4291A RF impedance analyser. Their rugged construction lowers the DC resistance and increases current carrying capacity compared to plated beads. The wires are oxygen-free high conductivity copper with 100% matte tin plating over a nickel undercoating. SM bead meets the solderability specifications when tested in accordance with MIL-STD-202, method 208. After dipping the mounting site of the bead, the solder surface shall be at least 95% covered with a smooth solder coating. The edges of the copper strip are not specified as solderable surfaces.

• NiZn ferrite developed to combine a high suppression performance with very high DC resistivity
• 0.25cal/g/°C Specific heat
• 3.5 to 4.5mW/cm-°C Thermal conductivity