FMD28-461_10 Datasheet, PDF (2/8 Pages) Interpoint Corporation Company – Attenuation to 50 dB at 500 kHz Up to 7 A throughput current

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
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
Derating Input/Output Current
• Linearly from 100% at 125°C to 0% at 135° C
Isolation
• 100 megohm minimum at 500 VDC
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
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
+Vout
Case
Input
Output
Common Common
DC/DC CONVERTER
+Vin
+Vout
Case
Input
RL
Output
Common Common
Chassis
ground
Multiple units
allowed up to
rated output
RL
current of filter
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.
Figure 1: Connection Diagram
Positive
Input
Positive
Output
Input
Common
www.interpoint.com
FMD28-461
Figure 2: FMD28-461 Schematic
Page 2 of 8
FMD28 Rev C - 20100226
Output
Common