9822_SF
(1/2)
SF Series
EMC Components
Differential Mode Choke Coils for Signal Line and DC Power Line
Radial
MOLDED TYPE
FEATURES
TYPICAL CHARACTERISTICS OF SF CORE
µi[300kHz]
75
• The SF series chokes feature cores with high saturation mag-
netic flux density. They thereby provide an effective means of
combating pluse EMC.
–3
tanδ/µi[300kHz]
3×10
10MHz max.
5.2%
Applicable frequency
Temperature stability[–20 to +60°C]
Bs[24kA/m]
• By using an advanced amorphous metal alloy core, the SF
series are able to provide line noise attenuation performance
equivalent to conventional ferrite-based chokes but with far more
compact dimensions and fewer coil turns. They can thus be
implemented in high-density circuit configurations to comply with
various EMC-related regulations.
1400mT
SHAPES AND DIMENSIONS/ELECTRICAL CHARACTERISTICS
D
H
( )
F
Dimensions in mm
Rated
current
(A)max.
DC
resistance
(mΩ)max.
Diameter of
winding wire
Dimensions(mm)
1
Inductance
(µH)min.
Weight
(g)
2
Part No.
Shape
3
D max.
H max.
L
(F)
ø(mm)
0.6
0.6
0.6
0.6
0.8
0.8
0.8
1
SF-T8-30SM
SF-T8-40SM
SF-T8-50SM
SF-T8-50DM
SF-T10-30M
SF-T10-40M
SF-T10-50M
SF-T12-30M
SF-T12-40M
SF-T12-50M
2
2
2
2
3
3
3
5
5
5
26
46
72
125
40
72
110
35
64
100
55
70
85
100
40
50
70
30
40
50
SF-T8S
SF-T8S
SF-T8S
SF-T8D
SF-T10
SF-T10
SF-T10
SF-T12
SF-T12
SF-T12
19
20
20
20
24
25
25
30
30
30
11
11
11
15
13
14
14
15
15
15
25±3
25±3
25±3
25±3
25±3
25±3
25±3
25±3
25±3
25±3
8
8
8
11
10
10
10
10
10
10
5.5
5.5
6.5
9.5
14
15
16
19
20
22
1
1
1 LCR METER: YHP4261A, 1kHz(L 190µH:70mA, L>190µH:10mA)
2 UEW (Grade 1)
3 Reference value
• Please contact TDK, when specifying dimensions of the center hole for the coil.
• Be cautions when handling molded types since the coating might crack or peel off if the lead wire is pulled in a right angle. However, even if the coating
cracks or peels off, there will be no damage to the electrical characteristics.
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.