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002-02 / 20020730 / e9841_sf.fm
EMC Components
SF1 Series
Differential Mode Choke Coils for Signal Line and DC Power Line
Pin Terminal
For Noise Suppression
FEATURES
• The SF series chokes feature cores with high saturation magnetic flux density. They thereby provide an effective means of
combating pluse EMC.
• 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.
TYPICAL CHARACTERISTICS OF SF CORE
µi[300kHz]
tanδ/µi[300kHz]
Applicable frequency
Temperature stability[–20 to +60°C]
Bs[24kA/m]
75
3×10–3
10MHz max.
5.2%
1400mT
H
3.2+0.5, –0.3
SHAPES AND DIMENSIONS/ELECTRICAL CHARACTERISTICS
SF1-T SERIES, ON BOARD TYPE WITH BASE (WITH SUPPORT PIN TERMINAL)
2-ø0.7
(F)
10±3
(f)
L
W
Dimensions in mm
DC
Rated
Inductance∗1
resistance
Part No.
current
(µH)min.
(mΩ)max.
(A)max.
SF1-T5-30-01
1
30
80
SF1-T5-40-01
1
80
110
SF1-T8-30S-01
2
26
55
SF1-T8-40S-01
2
46
70
SF1-T8-50S-01
2
72
85
SF1-T8-50D-01
2
125
100
∗1LCR METER: YHP4261A, 1kHz(L
190µH:70mA, L>190µH:10mA)
Diameter of
Dimensions(mm)
winding wire∗2
L max.
W max.
ø(mm)
0.4
13.5
9
0.4
13.5
9
0.6
18
12.5
0.6
18
12.5
0.6
18
12.5
0.6
18.5
15.5
∗2UEW (Grade 1) ∗3Reference value
H max.
(F)∗3
(f)∗3
Weight
(g)
14
14.5
18
18
18
18
(7.5)
(7.5)
(9.7)
(9.7)
(9.7)
(13)
(10)
(10)
(14)
(14)
(14)
(14)
2.9
2.7
5.5
6
6.5
9
L
(F)
SF1-T SERIES, HORIZONTAL ON BOARD TYPE WITH BASE (WITHOUT SUPPORT PIN TERMINAL)
W
H
5±1
Dimensions in mm
DC
Rated
Inductance∗1
resistance
current
(µH)min.
(mΩ)max.
(A)max.
SF1-T5-40-02
1
80
110
SF1-T5-35-02
2
63
75
SF1-T8-50S-02
2
72
85
SF1-T10-30-02
3
40
40
SF1-T10-40-02
3
72
50
SF1-T10-50-02
3
110
70
SF1-T12-30-02
5
35
30
SF1-T12-40-02
5
64
40
SF1-T12-50-02
5
100
50
∗1LCR METER: YHP4261A, 1kHz(L
190µH:70mA, L>190µH:10mA)
Part No.
• All specifications are subject to change without notice.
Diameter of
Dimensions(mm)
winding wire∗2
L max.
W max.
ø(mm)
0.4
16.5
14
0.5
16.5
14
0.6
19
17
0.8
26.5
22
0.8
26.5
22
0.8
26.5
22
1
30.5
26
1
30.5
26
1
30.5
26
∗2UEW (Grade 1) ∗3Reference value
H max.
(F)∗3
Weight
(g)
8.9
8.9
10.5
15
15
15
16.5
16.5
16.5
(12.7)
(12.7)
(15.2)
(20)
(20)
(20)
(25)
(25)
(25)
3.5
3
6
13
14
16
18.5
20
22.5
