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NOT RECOMMENDED FOR NEW DESIGNS Features
eMI INpuT FILTerS 28 VoLT INpuT
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
Attenuation 40 dB from 110 kHz to 50 MHz * Operating temperature -55 to +85C * 1.75 to 5 A throughput current * Transient suppression * Nominal 28 V input, 0 V to 40 V operation
* Compliant to MIL-STD-461C CE-03
INpuT (V) 0 - 40 0 - 40 0 - 40
INpuT VoLTage aND CurreNT
MODELS
CurreNT (a) 1.75 3.8 5.0
Size (max.): Non-flanged case H3 - FM-461 2.110 x 1.120 x 0.417 inches (53.59 x 28.45 x 10.59 mm) H5 - FMA/FMB 2.110 x 1.120 x 0.495 inches (53.59 x 28.45 x 12.57* mm) Flanged case K4 - FM-461 2.910 x 1.115 x 0.417 inches (73.91 x 28.32 x 10.59* mm) K6 - FMA/FMB 2.910 x 1.115 x 0.495 inches (73.91 x 28.32 x 12.57 mm) Weight: Maximum - FM-461 38 grams, FMA-461 42 grams, FMB-461 43 grams Screening: Standard or ES. See screening table for more information.
Description
The FM-461, FMA-461, and FMB-461 EMI filter modules have been specifically designed to reduce the input line reflected ripple current of Interpoint's MTO, MTW, MHE, MLP, and MFW Series of DC/DC converters. They are intended for use in applications of high frequency (100 kHz) switch-mode DC/DC converters which must meet MIL-STD-461C levels of conducted power line noise. These filters are built using thick-film hybrid technology and are sealed in metal packages for military, aerospace, and other highreliability applications. See Section B8, cases H3, H5, K4, and K6 for dimensions. See Section C2 for screening options.
FILTer operaTIoN
A fast-reacting (1 picosecond) transient suppressor clamps the input voltage at approximately 47 V, protecting the DC/DC converter from line induced transients. The filters are rated to operate, with no degradation of performance, over the temperature range of -55C to +85C (as measured at the baseplate). Above 85C, input voltage and current must be derated as specified in "Derating" on the following page. The maximum power dissipation of the filters at maximum input current represents a power loss of less than 3% at typical input voltage.
MIL-STD NoISe MaNageMeNT
When used in conjunction with Interpoint's DC/DC converters (see connection diagram, Figure 2), the input ripple current will be reduced by 40 dB within the frequency band of 100 kHz to 50 MHz. This gives the filter/converter combination a performance which exceeds the CE03 test limit of MIL-STD-461C. The CE03 performance of a model MHE2805S converter with and without the FM-461 filter is shown in Figures 6 and 7.
LayouT requIreMeNTS
The case of the filter must be connected to the case of the converter through a low impedance connection to minimize EMI.
Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 * Redmond WA 98073-9705 425.882.3100 * power@crane-eg.com www.interpoint.com
Page 1 of 9 FM/A/B Rev C 20100212
eMI INpuT FILTerS
absolute maximum ratings
input Voltage * 0 to 40 VDC continuous Lead soldering temperature (10 sec per lead) * 300C storage temperature range (case) * -55C to +135C
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
derating
input Voltage Derate linearly from 100% at 85C case to the 33 VDC at 125C case input ripple current Derate linearly from 100% at 85C case to the following at 125C case 270 mA rms FM-461 400 mA rms FMA-461 480 mA rms FMB-461 Dc input and output current Derate linearly from 100% at 85C case to the following at 125C case 750 mA FM-461 1.7 A FMA-461 1.7 A FMB-461
isolation * 100 megohm minimum at 500 V * Any pin to case (except case pin) input Voltage range * 0 to 40 VDC continuous
recommended operating conditions
case operating temperature (tc) * -55C to +85C full power * -55C to +125C absolute
Electrical Characteristics: 25C Tc, nominal Vin, unless otherwise specified.
FM-461
28
FMA-461
28
FMB-461
28
paraMeTer
INpuT VoLTage INpuT CLaMpINg VoLTage
CoNDITIoNS
CoNTINuouS
MIN Typ MaX 0 40 38.9 43.2 47.5 42.3 47.0 51.7 44.9 49.9 54.8 -- -- -- -- -- -- 40 0.38 1.75 0.67
MIN Typ MaX MIN Typ MaX 0 40 0 40 38.9 43.2 47.5 38.9 43.2 47.5 42.3 47.0 51.7 42.3 47.0 51.7 44.9 49.9 54.8 44.9 49.9 54.8 -- -- -- -- 40 3.8 1.0 -- -- -- -- -- -- 40 5.0 1.2 --
uNITS VDC VDC A A rms dB pF VDC A W
-55C +25C +125C
INpuT CurreNT
DC
rIppLe
NoISe rejeCTIoN DC reSISTaNCe (rDC) CapaCITaNCe ouTpuT VoLTage1 ouTpuT CurreNT power DISSIpaTIoN
15 kHz To 50 MHz
STeaDy STaTe aNy pIN To CaSe STeaDy STaTe STeaDy STaTe MaX CurreNT
----
0.42 0.07 0.10 0.15 0.07 0.09 0.10 6450 -- 8000 -- -- 5.0 2.5 VoUT = VIN - IIN(RDC) 1.75 -- -- 3.8 -- 1.3 -- -- 1.6 --
1900 -- 2200 3700 -- 4400 -- -- -- --
Note 1. Typical applications result in Vout within 2% of Vin.
469 H 1000 pF x2 0.1 F 0.01F 0.001F 2.4 H
Positive Input
Positive Output
50 Input Common 150 47 pF Output Common
4.7 F
FM-461
1000 pF 500 V
FIgure 1: SCheMaTIC
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Page 2 of 9 FM/A/B Rev C 20100212
eMI INpuT FILTerS
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
Positive Input 1000 pF
>150 H
2.4 H x2 x2 x3 0.1 F 0.01 F 0.001 F Positive Output
50 Input Common 150 47 pF
x2 4.7 F Output Common 1000 pF 500 V
FMA-461
FIgure 2: SCheMaTIC
Positive Input
P6KE47
0.65
3.5 H
3.5 H
Positive Output
50
4.7 F
9.4 F
18.8 F
Input Common
Output Common 47 pF 500V
FMB-461
3300 pF 500 V
FIgure 3: SCheMaTIC
EMI FILTER +Vin +Vout Case Output Input Common Common
DC/DC CONVERTER +Vin +Vout RL Case Output Input Common Common
Chassis ground
Multiple units allowed up to rated output current of filter
RL
The case ground connection should be as low an impedance as possible to minimize EMI. Direct contact of baseplate to chassis ground provides the lowest impedance.
FIgure 4: CoNNeCTIoN DIagraM
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Page 3 of 9 FM/A/B Rev C 20100212
eMI INpuT FILTerS
pin out
pin 1 2 3 4 5 designation Positive Input Positive output Case Ground Output Common Input Common
Squared corner and dot on top of package indicate pin one. 1 BOTTOM VIEW FM-461, FMA-461, FMB-461 5 2 3 4
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
Dotted line outlines flanged package option.
See cases H3, H5, K4, and K6, for dimensions.
FIgure 5: pIN ouT
model numbering key
Base Model FM, FMA, or FMB FMB - 461 F / ES
MIL-STD-461 reference Case Option (Non-flanged case has no designator in this position) Screening (Standard screening has no designator in this position)
Typical Performance Curves: 25C Tc , nominal Vin, unless otherwise specified.
90 90
CE03 Limit
70 70
CE03 Limit
EMISSION LEVEL (dmA)
EMISSION LEVEL (dmA)
50
50
30
30
10
10
.015
.1
1
10
50
.015
.1
1
10
50
FREQUENCY (MHz)
FREQUENCY (MHz)
MHE Converter Without Filter
MHE Converter With FM-461 EMI Filter
FIgure 6 www.interpoint.com
FIgure 7
Page 4 of 9 FM/A/B Rev C 20100212
eMI INpuT FILTerS
BOTTOM VIEW CASE H3
Squared corner and dot on top of case indicate pin one.
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
Solder Seal
1.120 (28.45)
0.960 (24.38) 1 2
0.040 dia (1.02)
0.560 (14.22) 5
3
4
Solder Tip-off
0.160 (4.06) 0.000 0.000 0.25 +0.05/-0.00 (6.4 +1.3/-0.0) 0.000
0.255 (6.48)
1.855 (47.12)
Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Tin Cover Cold Rolled Steel/Nickel/Tin Pins #52 alloy, compression glass seal
Case H3, Rev C - 20100211 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2010 Interpoint Corp. All rights reserved.
0.417 max (10.59)
FIgure 8: CaSe h3 - FM-461 NoN-FLaNgeD
www.interpoint.com
Page 5 of 9 FM/A/B Rev C 20100212
2.110 (53.59)
eMI INpuT FILTerS
BOTTOM VIEW CASE H5
Squared corner and dot on top of case indicate pin one.
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
Solder Seal
1.120 (28.45)
0.960 (24.38) 1 2
0.040 dia (1.02)
0.560 (14.22) 5
3
4
Solder Tip-off
0.160 (4.06) 0.000 0.000 0.25 +0.05/-0.00 (6.4 +1.3/-0.0) 0.000
0.255 (6.48)
1.855 (47.12)
0.495 max (12.57)
Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Tin Cover Cold Rolled Steel/Nickel/Tin Pins #52 alloy, compression glass seal
Case H5, Rev C - 20100211 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2010 Interpoint Corp. All rights reserved.
FIgure 9: CaSe h5 - FMa/FMB-461 NoN-FLaNgeD
www.interpoint.com
Page 6 of 9 FM/A/B Rev C 20100212
2.110 (53.59)
eMI INpuT FILTerS
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
BOTTOM VIEW CASE K4 *Flanged case: Designator "F" required in Case Option position of model number.
Solder Seal Squared corner and dot on top of case indicate pin one.
1 0.555 (14.1) 5 2 3 4
1.115 (28.32) 0.955 (24.26) 0.040 dia (1.02)
0.162 dia (4.11)
Solder Tip-off
0.155 (3.94) 0.000 0.230 (5.84) 0.000 0.000
0.245 (6.22)
1.845 (46.86)
0.417 max (10.59)
2.910 max (73.91)
Flange Thickness: 0.067 +0.005/-0.007 (1.70 +0.13/-0.8) Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin.
Case K4, Rev E - 20100211 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2010 Interpoint Corp. All rights reserved.
FIgure 10: CaSe K4 - FM-461 FLaNgeD
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Page 7 of 9 FM/A/B Rev C 20100212
2.320 (58.93)
0.25 0.03 (6.4 0.8)
eMI INpuT FILTerS
*Flanged case: Designator "F" required in Case Option position of model number. Squared corner and dot on top of case indicate pin one. 1 2 3 5 4
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
BOTTOM VIEW CASE K6
Solder Seal
1.115 (28.32) 0.955 (24.26) 0.040 dia (1.02) 0.555 (14.1)
0.162 dia (4.11)
Solder Tip-off 0.155 (3.94) 0.000 0.495 max (12.57) 0.230 (5.84) 0.000 0.000 0.25 0.03 (6.4 0.8)
0.245 (6.22)
1.845 (46.86)
2.910 max (73.91)
Flange Thickness: 0.067 +0.005/-0.007 (1.70 +0.13/-0.8) Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. Case K6, Rev E - 20100211 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2010 Interpoint Corp. All rights reserved.
FIgure 11: CaSe K6 - FMa/FMB-461 FLaNgeD
www.interpoint.com
Page 8 of 9 FM/A/B Rev C 20100212
2.320 (58.93)
eMI INpuT FILTerS
FM-461, FMA-461 AND FMB-461 1.75 To 5 AMP
STANDARD AND /ES (NON-QML) PRODUCTS ENVIRONMENTAL SCREENING 1
test perFormed Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. B, -55C to +125C, ambient Constant Acceleration Method 2001, 500 g Burn-in Method 1015 3 96 hours Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 and 4: +25C case Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) Final visual inspection Method 2009
standard non-Qml2
yes no no
/es non-Qml2
yes yes yes
no yes no no yes yes
yes yes yes yes no yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: Notes: 1. refers to products that do not offer QML screening. 1. refers to products non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Standard and /ES, that do not offer QML screening. 2. Standarddesigned to bring the case temperature to theof the requirements of MIL-PRF-38534. 3. Burn-in and /ES, non-QML products, do not meet all maximum case temperature of the product. Refer to the specific product information 3. Burn-in designed to bring the case temperature to the maximum case temperature of 85C. for the maximum case temperature.
FM/FMA/FMB-461 EMI Filter, FM/A/B Rev C 20100212. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. FM/FMA/FMB-461 Series is a trademark of Interpoint. Copyright (c) 1999 - 2010 Interpoint Corporation. All rights reserved. www.interpoint. com
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