Crane Aerospace & Electronics Power Solutions
FMD28-461 eMi input Filters
28 Volt input – 7 aMp
Operating COnditiOns and
CharaCteristiCs
input Voltage range
•
0 to 50 VDC continuous
•
Transient +100 V for 100 ms
meChaniCal and envirOnmental
size (maximum)
•
Case J4, FMD28-461
‣
2.720 x 1.350 x 0.505 inches (69.09 x 34.29 x 12.83 mm)
‣
Shown on page 1 in Case J4 (down-leaded).
•
Case U, FMD28-461SL
3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm)
Weight (maximum)
•
Case J4: 55 grams typical
•
Case U: 77 grams typical
lead soldering temperature (10 sec per lead)
•
300°C
storage temperature range (case)
•
-65°C to +150°C
case operating temperature (t
c
)
•
-55°C to +125°C full power
•
-55°C to +135°C absolute
isolation
•
100 megohm minimum at 500 VDC
Derating input/output current
•
Linearly from 100% at 125°C to 0% at 135° C
screening
FMD28 is offered with 125°C Standard and /ES, non-QML
screening. See Standard and /ES (non-QML) screening tables for
more information on page 8.
EMI FILTER
+Vin
Case
Output
Input
Common Common
+Vout
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
1: c
OnnectIOn
d
IagRaM
Positive
Input
Positive
Output
Input
Common
Output
Common
FMD28-461
F
IguRe
2: FMd28-461 s
cheMatIc
www.interpoint.com
Page 2 of 8
FMD28 Rev C - 20100226
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
