HI–REL DESIGN

• WELDED HERMETIC PACKAGE

• ALL CERAMIC CAPACITORS

• SURFACE MOUNT MAGNETICS

FEATURES

• REPLACES APEX FDHC461

• –55º TO +125ºC OPERATION

• 40db MINIMUM DIFFERENTIAL MODE REJECTION

AT200KHz

• 60db MINIMUM DIFFERENTIAL MODE REJECTION

FROM 500 KHzTO 50 MHz

• MEETS MIL–STD–461C CEO3 STANDARDS FOR

MSK DHC2800 SERIES DC–DC CONVERTERS

• MIL–STD–704A THROUGH E POWER BUS

COMPATABILITY

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.

TYPICAL APPLICATION

EQUIVALENT SCHEMATIC

EXTERNAL CONNECTIONS

V

IN

+Vout

CASE

GND

OUTPUT

COMMON

INPUT

COMMON

4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

EFJ2803

ISO-9001 CERTIFIED BY DSCC

3A

EMI FILTER

Rev. - 2/01

1

1

2

3

4

5

6

7

8

+VIN

+VOUT

+VOUT

CASE GROUND

OUTPUT COMMON

OUTPUT COMMON

INPUT COMMON

CASE GROUND