eMI I
NpuT
F
ILTerS
FM-461, FMA-461
AND FMB-461
1.75 To 5 AMP
Positive
Input
1000 pF
>150
H
2.4
H
x2
x2
x3
0.1
F
0.01
F
0.001
F
Positive
Output
50
Input
Common
150
47 pF
x2
4.7
F
Output
Common
1000 pF
500 V
FMA-461
F
Igure
2: S
CheMaTIC
Positive
Input
P6KE47
0.65
3.5
H
3.5
H
Positive
Output
50
4.7
F
9.4
F
18.8
F
Input
Common
Output
Common
47 pF
500V
FMB-461
3300 pF
500 V
F
Igure
3: S
CheMaTIC
EMI FILTER
+Vin
+Vout
Case
Output
Input
Common Common
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 should be as low an impedance as possible to minimize EMI.
Direct contact of baseplate to chassis ground provides the lowest impedance.
F
Igure
4: C
oNNeCTIoN
D
IagraM
www.interpoint.com
Page 3 of 9
FM/A/B Rev C 20100212
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
