HI28B2039 FerriShield, HI28B2039 Datasheet - Page 35

• 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

For attenuation properties by frequency, see page 32
1. Cable Size
2. Closure
3. Position
4. Attachment
Pressure sensitive adhesive
Installation Guidelines
Tight grip on cable
Refer to the chart on the page 33 for maximum recommended cable (or cable bundle)
diameter. More than one cable may be inserted through the core opening since each
circuit reacts with the ferrite material independently.
while greatly increasing the attenuation effect due to the increased magnetic path
length. See also page 6, figures 3 and 4 for related technical information.
A tight fit between the cable outside dimensions; i.e. O.D., and the ferrite
inside dimensions, i.e. I.D., will create the most effective magnetic path and a
correspondingly higher attenuation ratio. Conversely, a loose fit is acceptable for
many reasons, principally if a larger ferrite is desired, or a purpose-fit slack cable
for tension control, flexing, etc.
The suppressor should normally be located close to the cable termination where it
exits the electronic enclosure.
Where a cable connects two enclosures containing RF sources, a suppressor on
each end may be required.
For circuits within an enclosure, a position close to the RF source is best; however,
other locations along the circuit may work just as well. This provides the opportunity
to allow the suppressor, when affixed to the enclosure, to function also as a cable
routing guide. See “Attachment” below for alternatives.
Consider the various attachment alternatives shown below.
FerriShield
universal packaging, specific-purpose and general-purpose formulations. There are
a few simple guidelines to assure expected results.
Consider the double loop knot shown in Attachment section below for snug attachment
®
suppressors offer the finest performance alternatives by way of
Double loop knot
Cable tie wrap
35
Hardware: screw, rivet
Side-by-side double
loop for flat cables
RF SOURCE
RF SOURCE
RF SOURCE
RF SOURCE
Press-fit tabs
installation
OR
OR
ELECTRONIC ENCLOSURE
RF SOURCE
EQUIPMENT
OR POWER
AUXILIARY
SOURCE