MODELS
I
NPUT
V
OLTAGE
AND
C
URRENT
B3-7
FMD/FME EMI FILTER
0.7 TO 15 AMP
ABSOLUTE MAXIMUM RATINGS
EMI I
NPUT
F
ILTERS
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 0 to 40 VDC continuous for 28 V models
• 0 TO 400 VDC continuous for 270 V models
Case Operating Temperature (Tc)
• –55°C to +125°C full power
• –55°C to +135°C absolute
Derating Input/Output Current
• Linearly from 100% at 125°C to 0% at 135° C
Input Voltage
• 0 to 40 VDC continuous for 28 V models
• 0 to 400 VDC continuous for 270 V models
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
Isolation
• 100 megohm minimum at 500 V, any pin to case
(except FMD downleaded case case pin)
Electrical Characteristics: 25°C Tc, nominal Vin, unless otherwise specified.
FMD28-461
PARAMETER
INPUT VOLTAGE
NOISE
REJECTION
DC RESISTANCE
(R
DC
)
CAPACITANCE
OUTPUT VOLTAGE
OUTPUT CURRENT
POWER
DISSIPATION
CONDITION
CONTINUOUS
TRANSIENT 100 ms
1
500 kHz
1 MHz
MAX. CURRENT
Tc=25°C
Tc=125°C
ANY PIN TO CASE
STEADY STATE
STEADY STATE
MAX. CURRENT
Tc=25°C
Tc=125°C
—
—
—
—
—
—
7
6.0
7.4
—
—
—
MIN
0
–100
50
45
—
—
—
TYP
28
—
60
55
—
—
20,000
MAX
40
100
—
—
0.12
0.15
—
MIN
0
–500
50
45
—
—
—
FMD270-461
TYP
270
—
60
55
—
—
30,000
MAX
400
500
—
—
5.0
6.3
—
MIN
0
–100
30
40
—
—
—
FME28-461
TYP
28
—
40
50
—
—
60,000
MAX
40
100
—
—
0.07
0.07
—
0
–500
40
45
—
—
—
FME270-461
MIN
TYP
270
—
50
55
—
—
60,000
MAX
400
500
—
—
2.0
3.2
—
UNITS
VDC
V
dB
Ω
pF
VDC
V
OUT
= V
IN
- I
IN
(R
DC
)
—
—
—
0.7
2.5
3.1
—
—
—
—
—
—
15
15.75
15.75
—
—
—
—
—
—
1.5
4.5
7.2
A
W
Note
1. 28 V models = 0.5
Ω
source impedance, 270 V models = independent of source impedance.
B3-8
EMI I
NPUT
F
ILTERS
100 H
Positive
Input
0.55 H
100 H
1.25 H
FMD/FME EMI FILTER
0.7 TO 15 AMP
1.25 H
Positive
Output
6 F
50 V
6 F
50 V
6 F
50 V
Input
Common
Output
Common
FME28-461
F
IGURE
1: FME28-461 S
CHEMATIC
– T
YPICAL
V
ALUES
0.015 F
500 V
1.8 mH
Positive
Input
37 H
1.8 mH
37 H
37 H
Positive
Output
1.3
0.015 F
0.68 F
0.68 F
Input
Common
Output
Common
0.015 F
x2
x2
FME270-461
F
IGURE
2: FME270-461 S
CHEMATIC
– T
YPICAL
V
ALUES
B3-9
FMD/FME EMI FILTER
0.7 TO 15 AMP
135 H
Positive
Input
EMI I
NPUT
F
ILTERS
135 H
4.1 H
4.1 H
Positive
Output
1.3
0.1 F
50 V
6 F
50 V
10 F
50 V
4.1 H
Input
Common
0.015 F
500V
0.01 F
500 V
Output
Common
FMD28-461
F
IGURE
3: FMD28-461 S
CHEMATIC
– T
YPICAL
V
ALUES
844 H
Positive
Input
844 H
18.5 H
18.5 H
Positive
Output
1.3
0.015 F
0.68 F
0.68 F
Input
Common
Output
Common
0.015 F
FMD270-461
F
IGURE
4: FMD270-461 S
CHEMATIC
– T
YPICAL
V
ALUES
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 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.
F
IGURE
5: C
ONNECTION
D
IAGRAM
B3-10
EMI I
NPUT
F
ILTERS
PIN OUT SIDE-LEADED MODELS
FMD28-461SL, FMD270-461SL,
FME28-461, and FME270-461
Pin
1
1, 2, 3
4, 5, 6
7, 8, 9
10, 11, 12
—
Designation
Positive Input
Input Common
Output Common
Positive Output
Case Ground
2
FMD/FME EMI FILTER
0.7 TO 15 AMP
Angled corner and cover marking indicate pin one for cases U1, U2, and V.
Cover marking indicates pin one for cases W, Y and Z.
1
2
3
4
5
6
Outline shown is case U2, pin out is the same for all
side-leaded cases. 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 U1, U2, V, W, Y, and Z for dimensions.
TOP VIEW
All FME models, FMD28-461SL,
and FMD270-461SL
(Pin side, marked side)
12
11
10
9
8
7
Notes
1. All pins must be connected.
2. The baseplate is the only case ground connection and
should directly contact chassis ground.
F
IGURE
6: P
IN
O
UT
S
IDE
-L
EADED
M
ODELS
FMD28-461
Pin
1
2
3
4
5
Designation
Positive Input
Positive Output
Output Common
Case Ground
1
Input Common
PIN OUT DOWN-LEADED MODEL
Squared corner and dot on top
of package indicate pin one.
1
2
BOTTOM VIEW
FMD28-461
5
4
3
Note
1. Although down-leaded packages can be
connected to chassis ground with the case
ground lead, direct contact of the base plate to
chassis improves EMI performance.
See Section B8, case J4, for dimensions.
F
IGURE
7: P
IN
O
UT
FMD28-461
DSCC NUMBERS
DSCC D
RAWING
(5915)
95004-01HXC
95004-01HTC
95004-01HUC
95004-01HYC
95004-01HZC
95009-01HXC
IN PROCESS
IN PROCESS
IN PROCESS
IN PROCESS
FME S
ERIES
S
IMILAR
P
ART
FME28-461/883
FME28-461W/883
FME28-461V/883
FME28-461Y/883
FME28-461Z/883
FME270-461/883
FME270-461W/883
FME270-461V/883
FME270-461Y/883
FME270-461Z/883
MODEL NUMBERING KEY
FME
Base Model
Input Voltage
MIL-STD-461 Reference
Case/Lead Option*
Screening
(Standard screening has no designator
in this position.)
28 - 461
V
/ 883
*Case/Lead Option: See section B8, cases J4, U1, U2, V, W, Y, and Z for
drawings and dimensions, see Section A5 for ordering information.
FME models: Case U2 has no designator in the case/lead option position.
To designate a case option add the case letter to the model number –
FME28-461V.
FMD models: Case J4 (down-leaded) has no designator in the case/lead-
option position. To designate case U1 (side-leaded) for the FMD place
"SL" in the case/lead option position – FMD28-461SL. The 270 volt FMD
is only available in the side-leaded case – FMD270-461SL.
For exact specifications for a DSCC product, refer to the
DSCC drawing. Contact your Interpoint representative for
status on the FME DSCC releases. See Section A3,
“SMD/DSCC Lists”, for more information.
B3-11
