SFME120-461 INTERPOINT [Interpoint Corporation Company], SFME120-461 Datasheet

SFME120-461

Manufacturer Part Number

SFME120-461

Description

EMI INPUT FILTER 120 VOLT INPUT

Manufacturer

INTERPOINT [Interpoint Corporation Company]

Datasheet

1.SFME120-461.pdf (5 pages)

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DESCRIPTION

The SFME120-461™ EMI filter modules are specifically designed to

reduce the reflected input ripple current of Interpoint’s high

frequency DC/DC converters. SFME120-461 filters minimize elec-

tromagnetic interference (EMI) for Interpoint’s SMHP120 Series of

converters. These filters are intended for use in 120 volt applica-

tions which must meet MIL-STD-461 levels of conducted emis-

sions. One filter can be used with multiple converters up to the rated

throughput current of the filter.

The SFME120-461 filter offers three screening options – Standard,

Class H, or Class K. See Section C2, Quality Assurance, pages C2-

7 through C2-9, for descriptions. Detailed reports on product

performance are also available and are listed on page C2-9.

Switching DC/DC converters naturally generate two noise compo-

nents on the power input line: differential noise and common mode

noise. Input ripple current refers to both of these components.

Differential noise occurs between the positive input and input

common. Most Interpoint converters have an input filter that reduces

differential noise which is sufficient for most applications.

Common mode noise occurs across stray capacitances between

the converter’s power train components and the baseplate (bottom

of the package) of the converter.

Where low noise currents are required to meet CE03 of MIL-STD-

461, a power line filter is needed. The SFME120-461 EMI power line

• Fully qualified to Class H or K

• Passive components for

• –55° to +125°C operation

• 120 volt input

• Up to 2.1 amps of

• Up to 60 dB attenuation

• Compliant to

• Compatible with

NPUT

CREENING AND

EATURES

maximum tolerance in space

environments

throughput current

at 500 kHz.

MIL-STD-461C, CE03

MIL-STD-704E

DC power bus

IPPLE AND

EPORTS

EMI

Size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16mm)

Weight:

Screening: Standard, Class H, or Class K (MIL-PRF-38534)

See Section B8, case U1, for dimensions.

110 grams maximum

See Section C2 for screening options, see Section A5 for

EMI I

ordering information.

120 V

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. SFME120-461 is a trademark of Interpoint.

NPUT

OLT

filter reduces the common mode and differential noise generated by

the converters. SFME120-461 filters reduce input ripple current by

as much as 60 dB at 500 kHz and 55 dB at 1 MHz when used in

conjunction with Interpoint’s DC/DC converters.

The filter must be placed as close as possible to the converter for

optimum performance. The baseplates of the filter and the converter

should be connected with the shortest and widest possible conduc-

tors. For the best connection, mount the filter’s and converter’s

baseplates on or above a small ground plane.

SFME120-461 filters are rated for full power operation from –55°C

to +125°C case temperature. Current is derated linearly to zero at

+135°C case temperature.

The maximum dc insertion loss at full load and nominal input voltage

represents a power loss of less than 4%.

SFME120-461 filters are sealed in metal hermetic side-leaded pack-

ages (see Section B8, cases U2, V, W, Y, and Z). Additionally the

FMD28-461 filter is available in a metal hermetic down-leaded

package (see Section B8, case J4).

For more information, contact your Interpoint representative

listed in Section A5.

NSERTION

ACKAGING

PERATION OVER

NPUT

ILTER

OSS

EMPERATURE

SFME120-461

EMI FILTER 2.1

MODEL

SFME120-461

2.1 amp

AMP

B1-12

Related parts for SFME120-461

SFME120-461 Summary of contents

Page 1

... Common mode noise occurs across stray capacitances between the converter’s power train components and the baseplate (bottom of the package) of the converter. Where low noise currents are required to meet CE03 of MIL-STD- 461, a power line filter is needed. The SFME120-461 EMI power line EMI I F NPUT ...

Page 2

CASE CASE U 1.505 max (38.23) B8-36 C ASES Angled corner indicates pin one CASE U TOP VIEW (PIN SIDE) See Figures 55 and 56 for dimensions 3.005 (76.33) max. Note: Pins are shown for Case U1. Materials Header Cold ...

Page 3

MFL Series and MHP Series: Screening – Standard 883 MFLHP Series, FMD270 EMI Filter, and FMD28-461SL EMI Filters: Screening – Standard or ES SMFL, SMFLHP, SMHP, and SSP Series; SFCS, and SFME EMI Filters: Screening – Standard, Class ...

Page 4

... SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter QA SCREENING SPACE PRODUCTS C LASS K P M/S P yes yes no yes no no yes yes no yes yes no yes no ...

Page 5

... CREENING S TANDARD ) (O) no yes yes yes no no yes yes no no yes yes yes yes SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter C C LASS LASS yes yes yes yes yes yes yes no yes no yes yes yes no no ...

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