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FME28-461/883

更新时间： 2024-01-11 07:32:14
品牌 Logo 应用领域
CRANE 输入元件LTE
页数 文件大小 规格书
16页 238K
描述
EMI INPUT FILTERS 28 & 270 VOLT INPUT

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FME28-461/883 技术参数

生命周期：TransferredReach Compliance Code：unknown
风险等级：5.32滤波器类型：DATA LINE FILTER
最高工作温度：125 °C最低工作温度：-55 °C
包装材料：METAL筛选级别：38535Q/M;38534H;883B
子类别：Data Line Filters技术：HYBRID
Base Number Matches：1

FME28-461/883 数据手册

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FEATURES  
FMD/FME EMI FILTER  
0.7 TO 15 AMP  
EMI INPUT  
F
ILTERS  
• –55°C to +125°C operation  
• Up to 60 dB attenuation  
at 500 kHz.  
28 & 270 VOLT  
INPUT  
• Compliant to  
MODELS  
INPUT VOLTAGE  
AND CURRENT  
MIL-STD-461C, CE03  
• Compatible with  
MIL-STD-704E  
DC power bus  
Input (V)  
28  
28  
270  
Current ( A)  
7.0  
15.0  
0.7  
270  
1.5  
Size (max.): Case U2, FME all models; Case U1, FMD28-461SL and FMD270-461SL  
3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 11.16 mm)  
[FME models, shown in Case U2 (flanged, short leads). Also available:  
Flanged – leads bent down (case V); Tabbed – leads bent up (case W), short  
leads (case Y), and leads bent down (case Z).See Section B8, cases U2, V, W,  
Y, and Z for dimensions and options.]  
Case J4, FMD28-461  
2.720 x 1.350 x 0.505 inches (69.09 x 34.29 x 12.83 mm)  
See Section B8, cases J4, U1, U2, V, W, Y, and Z for dimensions.  
Weight:  
Screening: Standard, ES, or 883 (Class H).  
See Section C2 for screening options, see Section A5 for ordering information.  
77 grams typical cases U1, U2, V, W, Y, and Z; 55 grams typical case J4  
DESCRIPTION  
best connection, mount the filter’s and converter’s baseplates on or  
above a small ground plane. See Figure 5.  
The FMD Series™ and FME Series™ EMI filters are specifically  
designed to reduce the reflected input ripple current of Interpoint’s  
high frequency DC/DC converters. FMD/FME filters minimize elec-  
tromagnetic interference (EMI) for the MHE, MHL, MLP, MRH, MTO,  
MHF, MHF+, MHV, MHD, MTR, MFL, MHP, and MFLHP Series.  
These filters are intended for use in 28 or 270 volt applications  
which must meet MIL-STD-461C, CE03 levels of conducted emis-  
sions. One filter can be used with multiple converters up to the rated  
output current of the filter.  
TRANSIENTS  
The transients listed below will not damage the filter but will be  
passed on to the converter:  
•
•
•
All filters: ±600 volts (50 ohm source  
impedance) for up to 10 µs.  
28 volt filter: ±100 volts (0.5 ohm source  
impedance) for up to 100 ms.  
270 volt filter: ±500 volts (independent of  
source impedance) for up to 100 ms.  
INPUT RIPPLE AND EMI  
Switching DC/DC converters naturally generate two noise compo-  
nents on the power input line: differential noise and common mode  
noise. Input ripple current refers to both of these components.  
Differential noise occurs between the positive input and input  
common. Most Interpoint converters have an input filter that reduces  
differential noise which is sufficient for many applications. Common  
mode noise occurs across stray capacitances between the  
converter’s power train components and the baseplate (bottom of  
the package) of the converter.  
OPERATION OVER TEMPERATURE  
All FMD/FME-461 Series filters are rated for full power operation  
from –55°C to +125°C case temperature. Current is derated linearly  
to zero at +135°C case temperature.  
INSERTION LOSS  
The maximum dc insertion loss at full load and nominal input voltage  
represents a power loss of less than 4%.  
Where low noise currents are required to meet CE03 of MIL-STD-  
461, a power line filter is needed. The FMD/FME Series of EMI  
power line filters reduces the common mode and differential noise  
generated by the converters. FMD/FME-461 filters reduce input  
ripple current by as much as 60 dB at 500 kHz and 55 dB at 1 MHz  
when used in conjunction with Interpoint’s DC/DC converters. See  
Figures 8 and 9.  
PACKAGING  
FMD/FME-461 filters are sealed in metal hermetic side-leaded  
packages. See Section B8, cases U1, U2, V, W, Y, and Z.  
Additionally the FMD28-461 filter is available in a metal hermetic  
down-leaded package (see Section B8, case J4).  
LAYOUT REQUIREMENTS  
Place the filter as close as possible to the converter for optimum  
performance. The baseplates of the filter and the converter should be  
connected with the shortest and widest possible conductors. For the  
The case of the filter must be connected to the case of the converter  
through a low impedance connection to minimize EMI.  
B3-7  
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