STEWARD - U.S.A. • Telephone: 423/867-4100 • Fax 423/867-4102 • Internet: http://www.steward.com
SCOTLAND • Telephone: 44-(0)1-506-414200 • Fax 44-(0)1-506-410694
SINGAPORE • Telephone: (65)337-9667 • Fax (65)337-9686
Features:
·High current capability (10 amps continuous operation) ·Up to 170 ohms impedance @100MHz or 300 ohms @1GHz
·Parts available in both thru-hole (B) and surface mount (R) versions ·Parts available in broad band and high frequency materials
·Economical common mode EMI filtering ·Compact size
Applications:
·Filtering DC power on PC boards, especially in applications of greater than 3.0 amperes ·Filtering common mode EMI on high
speed differential lines such as network and SCSI subsystems ·Cost sensitive designs ·Applications where low DCR is needed
Part & Test Specifications:
·Maximum current ratings (I MAX) are determined by testing to a maximum temperature rise of 40
o
C with continuous operating
current ·Board level components are rated up to a maximum of 75 volts ·Part performance is shown with curves for Common, Open
and Normal Mode Impedances measured along two conductors. Common Mode Impedance is the impedance of EMI noise
conducted in the same direction along two conductors. Open Circuit Impedance is the impedance measured across a single leg of
the common mode choke. Normal Mode Impedance is the total impedance to the differential circuit (both out and back).
Tested with: ·HP4396A (100KHz - 1.8 GHz) or HP8753 (to 6 GHz) Network/Spectrum Analyzer ·HP43961A Impedance Test Kit
·HP16192A Test Fixture or Inter-Continental Microwave custom fixtures ·HP16200A DC Bias Adapter ·Philips PM2811 DC Power
Supply ·Ambient Temperature 23.5
o
C + 2
o
·Bandwidth 3 kHz ·Sweep Time 423 ms ·Impedance is rated at + 25% @100MHz
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1
03.6+
52.0
842.0(+
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83.11+
52.0
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23.9+
52.0
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26.7+
01.0
003.0(+
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45.2+
01.0
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011062571300.0000,01
00-R111X5452MC
2
03.6+
52.0
842.0(+
)010.0
83.11+
52.0
844.0(+
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23.9+
52.0
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26.7+
01.0
003.0(+
)400.0
45.2+
01.0
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011062571300.0000,01
00-B171X5452MC
1
03.6+
52.0
842.0(+
)010.0
83.11+
52.0
844.0(+
)010.0
23.9+
52.0
763.0(+
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26.7+
01.0
003.0(+
)400.0
45.2+
01.0
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071532023300.0000,01
00-R171X5452MC
2
03.6+
52.0
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)010.0
83.11+
52.0
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23.9+
52.0
763.0(+
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26.7+
01.0
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45.2+
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*
High Frequency Material
*
Ambient Operating Temperature Range: -55° C to +125° C
*
Figure 1 Figure 2
18
COMMON MODE
Protected by one or more of the following US Patents: 5,455,552 and 5,568,111
Steward’s
common mode power/data filter products provide the most economi
cal EMI filtering available for common mode noise. They provide EMI suppres
sion for conductors such as power traces (tracks), and for high speed input/
output circuitry (including network and storage subsystems). They exhibit high
frequency impedance essentially independent of DC bias current.
2 Line Ferrite Common
Mode Power Chokes
