SK
Series
Smallest, Lowest-Cost
RFI Power Line Filters
for SMPS Emission Control
SK7
UL Recognized
CSA Certified
VDE Approved
SK Series – 3, 6 & 10 Amp Models
This series of RFI filters was designed to reduce
conducted noise to acceptable limits for equipment that
must comply with the FCC specifications in the USA and
CISPR specifications in Europe.
The SK (Super K) series filters use significantly higher
element values than the general purpose K series, which
makes them better suited for equipment with line-to-
ground and line-to-line conducted emissions, including
switch mode power supplies.
The ESK models meet the very low leakage current
requirements of VDE portable equipment and (120 Volt)
UL 544 nonpatient medical equipment.
SK1
SK3
Specifications
Maximum leakage current,
each line-to-ground
@ 120 VAC 60 Hz:
@ 250 VAC 50 Hz:
Hipot rating (one minute):
line-to-ground
line-to-line
Operating frequency:
Rated voltage:
Rated current:
3VSK/3ESK
6VSK/6ESK
10VSK/10ESK
@120 VAC
3A
6A
10A
VSK Models
.4 mA
.7 mA
ESK Models
.21 mA
.36 mA
2250 VDC
1450 VDC
50/60 Hz
120/250 VAC
@ 250 VAC
3A
5A
8A
Electrical Schematic
Maximum current rated peaks:
3VSK/3ESK
10A
6VSK/6ESK
18A
10VSK/10ESK
30A
Minimum
insertion loss in dB:
Line-to-ground in 50 ohm circuit
Resistor location for reference only.
Current
Rating
.01
.08
23
22
Frequency–MHz
.1 .15 .5
1
5
25
24
29
28
43
42
44
40
42
36
10
42
36
30
30
27
VSK
3A, 6A, 10A 4
ESK
3A, 6A, 10A 4
Line-to-line in 50 ohm circuit
Current
Rating
.01
1
1
1
1
.08
3
3
3
3
Frequency–MHz
.1 .15 .5
1
5
10
3
10
3
25
10
25
10
59
55
59
55
65
65
65
65
62
65
62
65
10
40
50
40
65
30
40
50
40
45
SK
70
VSK
3A, 6A
10A
ESK
3A, 6A
10A
Line Cord
Line Cord No. GA400:
7
1/2
foot, 3-conductor line cord to mate with SK7 models.
Libertyville, IL (847) 680-7400
Series
Case Styles
Metric shown in italics.
SK
D
± .015
± .38
Case Dimensions
Metric shown in italics.
SK1
Part No.
3VSK1, 3ESK1
3VSK3, 3ESK3
3VSK7, 3VSK7M
3ESK7, 3ESK7M
A
(max)
3.85
97.8
2.56
65.0
3.21
81.5
4.34
110.2
3.05
77.5
3.21
81.5
4.97
126.2
3.69
93.7
B
(max)
2.07
52.6
2.07
52.6
2.25
57.2
2.25
57.2
2.25
57.2
2.25
57.2
2.25
57.2
2.25
57.2
2.25
57.2
C
(max)
1.16
29.5
1.16
29.5
1.53
38.9
1.28
32.5
1.28
32.5
1.78
45.2
E
(max)
3.35
85.1
3.35
85.1
0.63
†
16.0
3.83
97.3
3.83
97.3
0.63
†
16.0
2.938
74.63
2.938
74.63
1.575
40.01
3.427
87.05
3.427
87.05
1.575
40.01
Typical dimensions
.
0 7
.
07 x .16
Terminals:
.
250
(5) Holes:
Dia.(4) Slot:
Mounting holes:
.
188
Dia.(2)
6.35
1.8
1.8 x 4.1
4.78
6VSK1, 6ESK1
6VSK3, 6ESK3
6VSK7, 6VSK7M
6ESK7, 6ESK7M
10VSK1, 10ESK1
10VSK3, 10ESK3
3A-SK3
1.78
4.063 4.46
45.2 103.2 113.3
1.78
45.2
1.78
45.2
4.063
103.2
1.575
40.01
4.46
113.3
0.63
†
16.0
10VSK7, 10VSK7M 4.34
10ESK7, 10ESK7M
110.0
Typical dimensions
Wire leads:
4.0
Min.
101.6
Mounting holes:
.188
Dia. (2)
4.78
Ordering Information
†
±.02
±.5
6A & 10A-SK3
Consult your local Corcom sales representative for pricing.
SK7 & SK7M
Available Part Numbers
3VSK1
3VSK3
3VSK7
3VSK7M
6VSK1
6VSK3
6VSK7
6VSK7M
10VSK1
10VSK3
10VSK7
10VSK7M
3ESK1
3ESK3
3ESK7
3ESK7M
6ESK1
6ESK3
6ESK7
6ESK7M
10ESK1
10ESK3
10ESK7
10ESK7M
Line Cord No. GA400
Recommended Panel Cutout
SK
71
Tolerance: ±
Typical dimensions
.
0 7
.
07 x .16
Terminals:
.
250
(3) Holes:
Dia.(2) Slot:
6.35
1.8
1.8 x 4.1
.
005
0.13
Panel Cutout (back mount)
Libertyville, IL (847) 680-7400
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