Operating COnditiOns and CharaCteristiCs

input Voltage range

16 to 40 VDC continuous for 40 W load

•

lead soldering temperature (10 sec per pin)

300°C

•

storage temperature range (case)

-65°C to +150°C

•

-55°C to +125°C full power

•

Derating output power/current

Linearly from 40 W at 105°C to 20 W at 125°C to meet

•

MIL-STD-1275A (AT) and MIL-STD-704A

capacitance

0.017 µF max, any pin to case

•

undervoltage lockout

7 VDC min, 15 VDC max

•

100 megohm minimum at 500 V

•

Any pin to case, except case pin

•

meChaniCal and envirOnmental

size (maximum)

2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm)

•

See case K1 for dimensions.

•

Weight (maximum)

40 grams typical

•

screening

Standard, ES, or 883 (Class H). See Screening Tables 1 and 2

•

for more information.

0.068



F

Positive

Input

Input

Common

Positive

Output

Output

Common

FM-704A

3.6 H

6 F

25 

3.6 H

6 F

3300

pF

15 

3300 pF / 500V

390 H

Inhibit

Oscillator

3300 pF

500V

6600 pF

500V

Case

The case ground connection between the filter and the converter should be as low

an impedance as possible to minimize EMI. Direct contact of the baseplate to

chassis ground provides the lowest impedance.

inhibit

Active low (output disabled)

•

Active low 0.8 V max

‣

Inhibit pin will source 0.6 mA max.

‣

Active high (output enabled)

•

open collector

‣

open pin voltage 5.5 V max.

‣

Crane Aerospace & Electronics Power Solutions

FM-704a eMi input Filter and transient suppression Module

28 Volt input – 40 Watt

www.craneae.com/interpoint

Page 2 of 9

FM-704A Rev C - 2011.11.07