ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
3A
EMI FILTER
EFJ2803
(315) 701-6751
HIREL DESIGN
WELDED HERMETIC PACKAGE
ALL CERAMIC CAPACITORS
SURFACE MOUNT MAGNETICS
FEATURES
REPLACES APEX FDHC461
55º TO +125ºC OPERATION
40db MINIMUM DIFFERENTIAL MODE REJECTION
AT 200 KHz
60db MINIMUM DIFFERENTIAL MODE REJECTION
FROM 500 KHzTO 50 MHz
MEETS MILSTD461C CEO3 STANDARDS FOR
MSK DHC2800 SERIES DCDC CONVERTERS
MILSTD704A THROUGH E POWER BUS
COMPATABILITY
EQUIVALENT SCHEMATIC
V
IN
+Vout
CASE
GND
INPUT
COMMON
OUTPUT
COMMON
DESCRIPTION
The EFJ2803 is a high reliability EMI filter for use with the
DAC2800/DHC2800 series of DC-DC converters. This filter
has been designed to reduce the input line reflected ripple
current to within the limit of MIL-STD-461C, CE03.
EFJ2803 hybird EMI filters utilize all ceramic capacitors,
surface mount magnetics and ultrasonically bonded alumi-
num wires to provide reliable operation at all operating tem-
peratures while surviving very high G forces.
The 8-pin package is hermetically sealed and isolated from
the internal circuits. Heat sinking is recommended for full
power operation at elevated ambient temperatures. Multiple
DC-DC converters may use the same filter, up to the rated
throughput current of the filter.
EXTERNAL CONNECTIONS
1
2
3
4
5
6
7
8
+VIN
+VOUT
+VOUT
CASE GROUND
OUTPUT COMMON
OUTPUT COMMON
INPUT COMMON
CASE GROUND
TYPICAL APPLICATION
1
Rev. - 2/01
EFJ2803
ABSOLUTE MAXIMUM RATINGS
INPUT VOLTAGE RANGE
INPUT VOLTAGE TRANSIENT
OUTPUT CURRENT
2
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE, case
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
0-50Vdc
80V @ 50ms
3Adc
–65 to 150°C.
–55 to ±125°C.
SPECIFICATIONS
PARAMETER
INPUT VOLTAGE
INPUT CURRENT
OUTPUT VOLTAGE
OUTPUT CURRENT
DC RESISTANCE (Rdc)
DIFFERENTIAL MODE REJECTION
DIFFERENTIAL MODE REJECTION
COMMON MODE REJECTION
CAPACITANCE
ISOLATION
OPERATING TEMPERATURE RANGE
STORAGE TEMPERATURE RANGE
POWER DISSIPATION
CASE TEMPERATURE RISE
NOTES: 1.
2.
TEST CONDITIONS
STEADY STATE
DC
STEADY STATE
STEADY STATE
T = 125°C
200 Khz
500KHz–50MHz
2MHz–50MHz
ANY PIN TO CASE
ANY PIN TO CASE, 500Vdc
CASE BASEPLATE
CASE BASEPLATE
1Adc, T=125°C
CASE TO AIR
MIN
0
TYP
28
V
out
= V
in
-Iin(RDC)
0.5 @ 25°C
40
60
40
4
100
–55
–65
0.65
38
+125
+150
0.85
3
0.85
MAX
40
3
UNITS
V
A
Vdc
A
Ohms
db
db
db
nF
MOhm
ºC
ºC
W
°C/W
Tcase= -55°C to 125°C unless otherwise specified.
Typical Dissipation at 3 amps is 6 watts.
2
Rev. - 2/01
TYPICAL PERFORMANCE
GRAPHS
EFJ2803
DHC2805S CONVERTER WITH EFJ2803 FILTER
DHC2803S CONVERTER WITH EFJ2803 FILTER
DAC2812S CONVERTER WITH EFJ2803 FILTER
DAC2815SS CONVERTER WITH EFJ2803 FILTER
DAC2812D CONVERTER WITH EFJ2803 FILTER
DAC2815D CONVERTER WITH EFJ2803 FILTER
3
Rev. - 2/01
MECHANICAL SPECIFICATIONS
NOTE: ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.
EFJ2803
ORDERING INFORMATION
SCREENING
BLANK= INDUSTRIAL; E= EXTENDED RELIABILITY;
H= CLASS H; K= CLASS K
OUTPUT CURRENT
03=3A
NOMINAL INPUT VOLTAGE
GENERAL PART NUMBER
The above example is an industrial grade 3 Amp EMI Filter
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
Please visit our website for the most recent revision of this datasheet.
M.S. Kennedy Corp.
4
Rev. - 2/01
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