PC Beads (Through Hole)
Part Number: 2944770301
44 PC BEAD
Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
– Last digit 1 = Standard Wire Length 2.4 mm (0.095″) Minimum, 2 = Wire Length 3.1 mm (0.122) Minimum
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.
Wires are oxygen free high conductivity copper with 100% matte tin plating over a nickel undercoating. Wires on top of the beads are covered with a layer of epoxy.
Recommended operating and storage temperature for the PC Beads is -55 °C to +125 °C.
PC Beads can be supplied with lower component heights “C”. Also, the wire length “F” can be modified to specific requirements.
Weight: 7.4 (g)
|Dim||mm||mm tol||nominal inch||inch misc.|
|Typical Impedance (Ω)|
PC Beads are controlled for impedance only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.
The PC Beads in 44 material are measured on the E4990A Impedance Analyzer. The 52 PC Beads are tested for impedance on the E4991A / HP4291B Impedance Analyzer.
|Typical Impendance (Ω)|
A NiZn ferrite developed to combine a high suppression performance, from 30 MHz to 500 MHz, with a very high DC resistivity.
Available in 44 material:
Round Cable Snap-Its
Connector EMI Suppression Plates
44 Material Characteristics
|Initial Permeability@ B < 10 gauss||µi||500|
|Flux Density @ Field Strength||Gauss
|Residual Flux Density||Gauss||Br||1100|
|Loss Factor @ Frequency||10 -6
|Tan δ/ µi||125
|Temperature Coefficient of Initial Permeability (20 -70°C)||% / °C||0.75|
**** Characteristic curves are measured on standard Toroids (18/10/6 mm) at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.