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FMC-461NT/883 PDF预览

FMC-461NT/883

更新时间: 2024-10-28 03:30:11
品牌 Logo 应用领域
CRANE 输入元件LTE
页数 文件大小 规格书
8页 121K
描述
EMI INPUT FILTER 28 VOLT INPUT

FMC-461NT/883 数据手册

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FEATURES  
FMC EMI FILTER  
2.7 AMP  
EMI INPUT  
F
ILTER  
NPUT  
• –55°C to +125°C operation  
• Up to 50 dB attenuation  
400 kHz to 50 MHz  
• Transient suppression  
• Compliant to  
28 VOLT  
I
MODEL  
MIL-STD-461C, CE03  
• Compatible with  
MIL-STD-704E  
FMC-461  
FMC-461NT  
2.7 Amp  
2.7 Amp  
DC power bus  
Size (max): Non-flanged, case H1  
2.125 x 1.125 x 0.400 (53.98 x 28.58 x 10.16 mm)  
Flanged, case K2  
2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm)  
See Section B8, cases H1 and K2, for dimensions.  
48 grams maximum  
Weight:  
Screening: Standard, ES, or 883 (Class H). See Section C2 for  
screening options, see Section A5 for ordering information.  
DESCRIPTION  
TRANSIENT SUPPRESSION  
The FMC-461™ EMI filter has been specifically designed to reduce  
the input line reflected ripple current of Interpoint’s MHF, MTR, MTO,  
MHV, MHF+, MHD, MTW, MHE, and MLP series of DC/DC  
converters. It is intended for use in applications which have high  
frequency switch-mode DC/DC converters and which must meet  
MIL-STD-461C levels of conducted and radiated noise.  
The FMC-461 filter also features a fast-reacting (1 pico second)  
transient suppressor which begins clamping the input voltage at  
approximately 47 VDC, protecting the DC/DC converter from  
damage from induced line transients.  
OPERATING TEMPERATURE  
The FMC filter is built using thick-film hybrid technology and is  
hermetically sealed in metal packages for military, aerospace, and  
other high-reliability applications. The filter uses only ceramic  
capacitors for reliable high temperature operation.  
The filter is rated to operate with no degradation of performance  
over the temperature range of -55°C to +125°C (as measured at the  
baseplate). Above +125°C, current must be derated as specified on  
the following page.  
MIL-STD NOISE MANAGEMENT  
INSERTION LOSS  
When used in conjunction with Interpoint converters, the FMC-461  
filter reduces input ripple current by 40 dB within the frequency band  
of 200 kHz to 50 MHz. This gives the filter/converter combination a  
performance which exceeds the CEO3 test of MIL-STD-461C.  
Typical FMC-461 filter frequency response and output impedance  
behavior are shown in Figures 4 and 5. CEO3 performance of a  
typical converter with the FMC-461 filter connected is shown in  
Figure 3.  
The maximum DC insertion loss for the FMC-461 filter (at a load of  
22 watts) represents a power loss of less than 2% at typical input  
voltage.  
LAYOUT REQUIREMENT  
The case pin, and ideally the case, should be tied to the case of the  
converter through a low-inductance connection.  
B3-13  

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