2773021447 Fair-Rite, 2773021447 Datasheet - Page 175
![no-image](/images/manufacturer_photos/0/2/250/fair-rite_sml.jpg)
2773021447
Manufacturer Part Number
2773021447
Description
EMI/RFI Suppressors & Ferrites LF Z=78OHM @ 25MHz
Manufacturer
Fair-Rite
Datasheet
1.2743037447.pdf
(193 pages)
Specifications of 2773021447
Shielding
Unshielded
Test Frequency
100 MHz
Product
Ferrite Beads
Impedance
78 Ohms
Operating Temperature Range
- 55 C to + 125 C
Termination Style
Axial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
2773021447
Manufacturer:
Fair-Rite Products Corp
Quantity:
64 000
Company:
Part Number:
2773021447L
Manufacturer:
Fair-Rite Products Corp
Quantity:
64 000
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14th Edition
P.O. Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) FAIR RITE / (845) 895-2055
The Magnetics
The permeability of a ferrite material is a complex parameter
consisting of a real and an imaginary part. The real component
represents the reactive portion and the imaginary component
represents the losses. These may be expressed as series
components (m
Figure 5 is the vector representation of the series equivalent
circuit of a ferrite suppression core; the loss free inductor (L
in series with the equivalent loss resistor (R
equations relate the series impedance and the complex perme-
ability:
Z = jwL
so that
where: L
The impedance of a ferrite suppressor core is a combination of
the intrinsic material characteristics u
turns and of the ferrite core. The complex permeability compo-
nents m
geometry and the number of turns are frequency independent
contributors to the overall impedance.
Figure 3, 4 Variety of EMI Suppression Cores including: (1) Beads on Leads, (2) Split Round Cable Suppression Cores and
Cases, (3) Split Flat Cable Suppression Cores and Cases, (4) Printed Circuit (PC) Beads, (5) Toroidal Type Shield Beads,
(6) Surface-Mount (SM) Beads, (7) on Reel, (8) Wound Beads, (9) Connector Suppression Discs and Plates and
(10) One of nine Engineering Kits containing a Large Variety of Samples of EMI Suppressor Cores.
(888) 324-7748
s
s
' and m
wL
R
+ R
2
o
s
s
= 4pN
1
s
= wL
= wL
s
= jwL
',m
s
" vary as a function of frequency. The core
4
s
C
") or parallel components (m
o
o
2
m
m
1
10
o
s
s
(m
' ohm
" ohm
-9
s
'- jm
(H) is the air core inductance.
5
s
") ohm
s
' and u
2
3
s
", the square of the
s
• FAX: (888) FERRITE / (845) 895-2629 • www.fair-rite.com • E-Mail: ferrites@fair-rite.com
p
). The following
',m
p
").
Technical Information
(888) 337-7483
6
s
) is
Fair-Rite Products Corp.
Figure 5
Material Selection
Conducted EMI can occur over a wide range of frequencies,
from as low as 1 MHz to several GHz. To provide protection over
such a wide frequency range a number of ferrite materials will
have to be made available.
Fair-Rite offers a complete line of suppression ferrites that cover
a gamut of frequencies. Starting at 1 MHz MnZn ferrites 73 and
31 are used. Beginning around 20 MHz up to 200/300 MHz the
NiZn materials 43 and 44 are recommended. For the highest
frequencies the NiZn 61 material is the choice.
Note: (914) Area Code has changed to (845).
9
8
10
7
175
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