FMH-461/883 [CRANE]
EMI INPUT FILTER 28 VOLT INPUT; EMI输入滤波器28伏特的输入
| 型号： | FMH-461/883 |
| 厂家： | 
Crane Aerospace & Electronics. |
| 描述： | EMI INPUT FILTER 28 VOLT INPUT |
| 文件： | 总9页 (文件大小：311K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FEATURES
FMH EMI FILTER
1.5 AMP
EMI INPUT
28 VOLT
F
ILTER
NPUT
• –55°C to +125°C operation
• 50 dB minimum attenuation
at 500 kHz
I
• Compliant to MIL-STD-461C, CE03
• Compatible with MIL-STD-704E
DC power bus
MODEL
FMH-461
1.5 amp
Size (max.): Non-flanged, case E3
1.460 x 1.130 x 0.330 (37.08 x 28.70 x 8.38 mm)
Flanged, case G3
2.005 x 1.130 x 0.330 inches (50.93 x 28.70 x 8.38 mm)
See Section B8, cases E3 and G3, for dimensions.
22 grams typical, 28 grams maximum
Weight:
Screening: Standard, ES, or 883 (Class H). See Section C2 for screening
options, see Section A5 for ordering information.
DESCRIPTION
Interpoint specifically designed the FMH-461™ EMI filter to reduce
the input line reflected ripple current of the following high frequency
DC/DC converters: MHD, MHF, MHF+, MHV, MSA , and MTR
series converters. It will also reduce EMI for several of Interpoint’s
lower frequency converters: MHE/MLP, MHL, MTO, and MTW
series. The FMH-461 filter is ideal for use in applications which must
meet MIL-STD-461C levels of conducted and radiated emissions.
Throughput current is 1.5 amps. At 16 VDC input (low line), the filter
provides 24 watts of throughput power.
FILTER OPERATION
FMH-461 filters are rated for full power operation from –55°C to
+125°C baseplate temperature. Operation is offered up to the
absolute maximum of +135°C with derating as defined in
“Recommended Operating Conditions” on the following page. The
maximum DC insertion loss at full load and nominal input voltage
(28 VDC) represents a power loss of less than 2%.
1
LAYOUT REQUIREMENTS
The case of the filter must be connected to the case of the converter
through a low impedance connection to minimize EMI.
MIL-STD NOISE MANAGEMENT
When used in conjunction with Interpoint converters, the FMH-461
EMI filter reduces input ripple current by 35 dB or greater at 200 kHz
and by at least 50 dB at 500 kHz (see Figures 5 and 6 and electrical
characteristics table). This attenuation gives the converter/filter
combination performance which exceeds MIL-STD-461C’s CE03
test.
1. MSA models may require an inductor in series with the MSA’s positive input.
2 µH is the suggested value.
B3-17
FMH EMI FILTER
1.5 AMP
ABSOLUTE MAXIMUM RATINGS
Input Voltage
EMI INPUT
F
ILTERS
TYPICAL CHARACTERISTICS
Capacitance
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 0.024 µF max, any pin to case
Isolation
• 100 megohm minimum at 500 V
• Any pin to case, except case pin
• 0 to 40 VDC continuous
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
• 16 to 40 VDC continuous
Case Operating Temperature (Tc)
• –55°C to +125°C full power
Derating DC Input/Output current
• Derate linearly from 100% at 125°C to 0% at
135°C case
Electrical Characteristics: 25°C Tc, nominal Vin, unless otherwise specified.
FMH-461
PARAMETER
INPUT VOLTAGE
INPUT CURRENT
NOISE REJECTION
CONDITIONS
MIN
0
TYP
28
MAX
40
UNITS
VDC
A
CONTINUOUS
—
—
1.5
—
200 kHz
500 kHz
35
50
—
40
dB
60
—
DC RESISTANCE (R
)
TC = 25°C
0.20
0.35
Ω
DC
1
V
= V - I (R
)
DC
OUTPUT VOLTAGE
STEADY STATE
VDC
OUT
IN IN
OUTPUT CURRENT
RIPPLE
—
—
—
—
0.3
1.5
A rms
A
STEADY STATE
INTERNAL POWER
DISSIPATION
MAXIMUM CURRENT
—
0.5
0.8
W
Notes
1. Typical applications result in Vout within 2% of Vin.
30
H
590
H
Positive
Output
Positive
Input
5.1
34
1
F
2
F
Output
Common
Input
Common
2
F
6800 pF
500 V
1
F
3300 pF
500V
FMH-461
FIGURE 1: SCHEMATIC
B3-18
FMH EMI FILTER
1.5 AMP
EMI INPUT
F
ILTERS
EMI FILTER
DC/DC CONVERTER
+Vin
+Vin
+Vout
+Vout
Case
Case
R
R
L
L
Input
Output
Common Common
Input
Common
Output
Common
Multiple units
allowed up to
rated output
Chassis
ground
current of filter
The case ground connection between the filter and the converter should be as low an impedance as possible
to minimize EMI. Direct contact of baseplate to chassis ground provides the lowest impedance.
FIGURE 2: CONNECTION DIAGRAM
PIN OUT
Dot on top of cover
indicates pin one.
Pin
1
Designation
Positive Input
Positive Output
Case Ground
Output Common
Input Common
1
5
2
BOTTOM VIEW
FMH
2
NON-FLANGED
AND FLANGED
3
4
3
4
5
Dotted line outlines flanged package option.
See Section B8, cases E3 and G3 for dimensions.
FIGURE 3: PIN OUT
MODEL NUMBERING KEY
DSCC NUMBER
DSCC DRAWING
(5915)
FMH-461 FILTER
SIMILAR PART
FMH
-
461
F
/ 883
Base Model
95003-01HXC
95003-01HZC
FMH-461/883
FMH-461F/883
MIL-STD-461 Reference
Case Option
(Non-flanged case has no designator in
this position)
For exact specifications for a DSCC product, refer to the
DSCC drawing. See Section A3, “SMD/DSCC Lists”, for
more information.
Screening
(Standard screening has no designator
in this position.)
B3-19
FMH EMI FILTER
1.5 AMP
EMI INPUT
F
ILTERS
Typical Performance Curves: 25°C Tc , nominal Vin, unless otherwise specified.
90
80
70
60
50
40
30
20
10
0
.015
0.1
1
10
50
FREQUENCY (MHz)
MHF+2805S Converter Without Filter
FIGURE 4
90
80
70
60
50
40
30
20
10
0
.015
0.1
1
10
50
FREQUENCY (MHz)
MHF+2805S Converter With FMH-461 Filter
FIGURE 5
20
10
0
-10
-20
1 K
100 K
10 K
1 M
FREQUENCY (Hz)
Typical Output Impedance (Z)
With Input Shorted
FMH-461
FIGURE 6
26421-001-DTS Rev A
DQ# 4044
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. FMH-461 is a trademark of Interpoint.
Copyright © 1992 - 1999 Interpoint. All rights reserved.
B3-20
CASE G
CASES
Squared corner and dot on top
of case indicate pin one.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover MHF+ Series and FMH Filter
Kovar/Nickel
SMHF
CASE G
Cold Rolled Steel/Nickel
#52 alloy (all cases)
compression glass seal
BOTTOM VIEW
Flanged package
See Figures 25 - 27
for pin configuration
1.130 max
(28.70)
Pins
Case dimensions in inches (mm)
Tolerance 0.005 (0.13) for three decimal places
0.01 (0.2) for two decimal places
unless otherwise specified
2.005 max
(50.93)
CAUTION
Heat from reflow or wave soldering may damage
the device. Solder pins individually with heat
application not exceeding 300°C for 10 seconds
per pin.
Flange Thickness: 0.047 (1.19)
FIGURE 24: CASE G MAXIMUM DIMENSIONS
BOTTOM VIEW CASE G1
Flanged cases: Designator "F" required in Case Option position of model number
MHF+ Series Single and Dual, LIM5050 Module: Screening – Standard, ES, or 883
SMHF Series, SLIM5050 Module: Screening – Space Standard, H, or K
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
8
2
3
7
4
5
6
0.030 dia.
(0.76)
0.128 dia
(3.25)
0.560
(14.22)
0.160
(4.06)
0.000
FIGURE 25: CASE G1
Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer
to the numerical dimensions for accuracy.
B8-15
CASE G
CASES
BOTTOM VIEW CASE G2
Flanged case: Designator required in Case Option position of model number.
MHF+ Series Triple: Screening – Standard, ES, or 883
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
9
2
3
8
4
7
5
6
0.128 dia
(3.25)
0.030 dia.
(0.76)
0.560
(14.22)
0.160
(4.06)
0.000
FIGURE 26: CASE G2
BOTTOM VIEW CASE G3
Flanged case: Designator required in Case Option position of model number.
FMH EMI Filter: Screening – Standard, ES, or 883
Squared corner and dot on top
of case indicate pin one.
Projection Weld
Seam Seal
0.030 dia.
(0.76)
0.960
(24.38)
1
5
2
0.128 dia
(3.25)
0.560
(14.22)
3
4
0.160
(4.06)
0.000
FIGURE 27: CASE G3
B8-16
CASE E
CASES
Squared corner and dot on top
of case indicate pin one.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
(SMHF Series
CASE E
Cold Rolled Steel/Nickel/Gold)
#52 alloy/Gold
compression glass seal
BOTTOM VIEW
See Figures 16 – 18
for pin configurations.
Pins
1.130 max
(28.70)
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
1.460 max
(37.08)
CAUTION
Heat from reflow or wave soldering may damage
the device. Solder pins individually with heat
application not exceeding 300°C for 10 seconds
per pin.
FIGURE 15: CASE E MAXIMUM DIMENSIONS
BOTTOM VIEW CASE E1
MHF+ Series Single and Dual: Screening – Standard, ES, or 883
MHF Series and LIM5050 Module: Screening – Standard or ES
SMHF Series Single and Dual and SLIM5050 Module:
Screening – Space Standard, H, or K
HR120 Series: No screening options
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
2
3
4
5
0.030 dia.
(0.76)
8
7
6
0.160
(4.06)
0.000
FIGURE 16: CASE E1
Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer
to the numerical dimensions for accuracy.
B8-10
CASE E
CASES
BOTTOM VIEW CASE E2
MHF+ Series Triple: Screening – Standard, ES, or 883
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
9
2
3
8
4
7
5
6
0.030 dia.
(0.76)
0.160
(4.06)
0.000
FIGURE 17: CASE E2
BOTTOM VIEW CASE E3
FMH EMI Filter: Screening – Standard, ES, or 883
Projection Weld
Squared corner and dot on
case top indicate pin one.
Seam Seal
0.030 dia.
(0.76)
0.960
(24.38)
2
3
1
5
0.560
(14.22)
4
0.160
(4.06)
0.000
FIGURE 18: CASE E3
B8-11
QA SCREENING
125°C PRODUCTS
125°C PRODUCTS
TEST (125°C Products)
STANDARD
/ES
/883 (Class H)*
PRE-CAP INSPECTION
Method 2017, 2032
yes
yes
yes
TEMPERATURE CYCLE (10 times)
Method 1010, Cond. C, -65°C to 150°C
Method 1010, Cond. B, -55°C to 125°C
no
no
no
yes
yes
no
CONSTANT ACCELERATION
Method 2001, 3000 g
Method 2001, 500 g
no
no
no
yes
yes
no
BURN-IN
Method 1015, 160 hours at 125°C
96 hours at 125°C case (typical)
no
no
no
yes
yes
no
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 through 6: -55°C, +25°C, +125°C
Subgroups 1 and 4: +25°C case
no
yes
no
yes
yes
no
HERMETICITY TESTING
Fine Leak, Method 1014, Cond. A
Gross Leak, Method 1014, Cond. C
Gross Leak, Dip (1 x 10 )
no
no
yes
yes
yes
no
yes
yes
no
-3
FINAL VISUAL INSPECTION
Method 2009
yes
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
*883 products are built with element evaluated components and are 100% tested and guaranteed over
the full military temperature range of –55°C to +125°C.
Applies to the following products
MOR Series
MFLHP Series
MFL Series
MHP Series
MTR Series
MQO Series**
MHD Series
MHV Series
MHF+ Series
MHF Series**
MGA Series
MSA Series
MGH Series
MCH Series
FM-704A EMI Filter
FMD**/FME EMI Filter
FMC EMI Filter
FMH EMI Filter
FMGA EMI Filter
FMSA EMI Filter
HUM Modules**
LCM Modules**
LIM Modules
**MFLHP Series, MQO Series, MHF Series, FMD EMI Filters, Hum Modules, and LCM Modules do not offer
‘883” screening.
C2-10
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