HI28B2039 FerriShield, HI28B2039 Datasheet - Page 8

• 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

Controlling RFI/EMI
Design Support
For attenuation properties by frequency, see page 32
and a receiver is an electromagnetic interference (EMI) shield.
Effectiveness, SE, which is expressed in decibels, dB, the ratio
of field strength on one side of the shield to the other side.
The figure above shows the relationship between shielding
effectiveness (in dB), the amount of attenuation, and attenuation
percentage.
pleased to help with applications, cross-referencing or complete
insertion loss calculations when a custom suppressor is
required.
Any device used to block an RFI signal between its source
The measure of this ability to attenuate RFI is Shielding
Engineering assistance is always available. We will be
Bisected ferrite
UL recognized
Cable gripping
99.9999
entry/exit port
99.999
RFI absorber
99.99
plastic case
99.9
99.0
90.0
SHIELDING EFFECTIVENESS (dB)
0
Typical FerriShield RFI suppressor.
20
40
60
80
100 120
1,000,000:1
100,000:1
10,000:1
1,000:1
100:1
10:1
8
FerriShield Advantages
to address a number of industry needs in the area of
Electromagnetic Compatibility, EMC.
current carrying capability with only an imperceptible
reduction in impedance versus solid ferrites of the
same size. The gap is magnetically insignificant while
it is electrically significant as a discontinuation, thereby
accommodating more current.
The concept of bisected ferrites has been developed
The technical air gap in bisected ferrites actually extends
• engineering adaptability
• risk-free engineering:
• easy retrofitting
• convenient installation
• integral mounting features
• cost-effectiveness
• extended resistance to core saturation under Direct
• consistent performance
ferrites for interference control
Current loads.
- tight tolerance performance
- easy to upgrade attenuation by changing size or
number of turns.
Gap effect of ferrite subjected to direct current.
I/O cable with RFI suppressor.