Crane Aerospace & Electronics Power Solutions
sFMc28-461 eMi input Filters
28 Volt input – 2.7 AMp
input Voltage range
• 0 to 50 VDC continuous
lead soldering temperature (10 sec per pin)
• 300°C
storage temperature range (case)
• -65°C to +150°C
case operating temperature (tc)
• -55°C to +125°C full power
Derating output power/current
• Derate linearly from 100% at 125°C to 0% at
135°C case
input to output capacitance
• 0.048 µF max., any pin to case
isolation
• 100 megohm minimum at 500 VDC
• Any pin to case, except case pin
Operating COnditiOns and CharaCteristiCs
meChaniCal and envirOnmental
size (maximum)
Non-flanged
2.125 x 1.125 x 0.400 (53.98 x 28.58 x 10.16 mm)
See case H1 for dimensions.
Flanged
2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm)
See case K2 for dimensions.
Weight (maximum)
48 grams typical
screening
Space Prototype (O), Class H, or Class K
Radiation tolerant to Radiation Hardness Assurance (RHA)
levels of “-” (O) or “H”, per MIL-STD-38534. Interpoint model
numbers use an “O” in the RHA designator position to indicate
the “-” (dash) Radiation Hardness Assurance level of
MIL-PRF-38534, which is defined as “no RHA”.
See “Class H and K, MIL-PRF-38534 Screening” tables for more
information. Available configurations: OO, HH, KH
EMI FILTER
DC/DC CONVERTER
+Vin
+Vout
+Vin
+Vout
RL
Case
Output
Input
Common Common
Case
Output
Input
Common Common
Multiple units
allowed up to
rated output
current of filter*
RL
Output impedance of the filter must be less than the combined
input impedance of the DC/DC converters.
F
Igure
1: C
onneCtIon
d
Iagram
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