HI28B2039 FerriShield, HI28B2039 Datasheet - Page 5

• Manufacturer Part Number: HI28B2039
• Description: FERRITE BEAD
• Manufacturer: FerriShield

Specifications of HI28B2039

• Impedance: 410ohm
• Width (latch Included): 45.7mm
• Internal Diameter: 11mm
• Frequency: 100MHz
• Size: 43.2 Mm X 50.8 Mm X 45.7 Mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

How to
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Helpful Tips and Insider Hints
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Ferrite performance typically increases as ferrite volume increases. The larger the
ferrite mass, the better the RF attenuation.
Smaller cables can be looped through larger ferrites to increase performance.
Impedance increase by the square of the number of loops. For example, by
looping a cable through a ferrite 2 times (2
Ferrite installation guidelines and recommendations are shown on page 35
Attenuation properties by part number can be referenced on page 32
Maximum recommend cable size by part number can be found on page 33
For a detailed explanation see page 6- Electromagnetic Characteristics
Choose a ferrite material
FerriShield ferrites are offered in (4) unique formulations. The chart below offers an overview
of typical material properties and catalog page references.
Ferrite
28 Material- Most Popular Wideband
33 Material- Low-Frequency Ferrite
25 Material- High-Frequency Ferrite
20 Material- Bluetooth/Microwave
For detailed Attenuation and Material Properties see page 32 and 33
Select a mounting option
Each section of this catalog features multiple mounting options for bisected and solid
bead ferrites. FerriShield Ferrites are recognized for their ease of installation and reliable
performance over time.
Select the inside diameter of your ferrite
FerriShield Ferrites are designed to fit tight against the cable or wiring bundle that requires
shielding. Ideally, you should select a ferrite with an inside diameter that is slightly less
(+/- .04”) than the outside diameter of your cable.
For quick reference, all part numbers in this catalog have an accompanying technical drawing
and specifications chart that illustrates dimensions and impedance for the selected ferrite.
For a more detailed technical explanation see page 33.
select a FerriShield Ferrite for your application
Performance
10MHz-1GHz (250MHz peak)
1MHz-60MHz (30MHz peak)
1MHz-1.2GHz (700MHz peak)
2.45GHz peak
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), impedance increases by a factor of 4.
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