SK
Series
3,6, & 10 Amp
Smallest, Lowest-Cost
RFI Power Line Filters
for SMPS Emission Control
SK1
UL Recognized
CSA Certified
VDE Approved
SEV 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 SEV, VDE portable equipment and (120
Volt) UL 544 nonpatient medical equipment.
SK7
SK3
Specifications
VSK Models
Maximum leakage current,
each line-to-ground
@ 120 VAC 60 Hz:
@ 250 VAC 50 Hz:
ESK Models
.4 mA
.7 mA
.21 mA
.36 mA
Hipot rating (one minute):
line-to-ground
line-to-line
Operating frequency:
Rated voltage:
Rated current:
@120 VAC
3A
6A
10A
2250 VDC
1450 VDC
50/60 Hz
120/250 VAC
@ 250 VAC
3A
5A
8A
Electrical Schematic
3VSK/3ESK
6VSK/6ESK
10VSK/10ESK
Maximum current rated peaks:
3VSK/3ESK
6VSK/6ESK
10VSK/10ESK
10A
18A
30A
Resistor location for reference only.
Minimum
insertion loss in dB:
Line-to-ground in 50 ohm circuit
Line Cord
Line Cord No. GA400:
7
1/2
foot, 3-conductor line cord to mate with SK7 models.
Current
Rating
.01
.08
Frequency–MHz
.1 .15 .5
1
5
10
30
VSK
3A, 6A, 10A 4
ESK
3A, 6A, 10A 4
23
22
25
24
29
28
43
42
44
40
42
36
42
36
30
27
SK
70
Line-to-line in 50 ohm circuit
Current
Rating
VSK
3A, 6A
10A
ESK
3A, 6A
10A
.01
.08
Frequency–MHz
.1 .15 .5
1
5
10
30
20 and 30 amp SK models on page 72.
*ESK models only.
1
1
1
1
3
3
3
3
10
3
10
3
25
10
25
10
59
55
59
55
65
65
65
65
62
65
62
65
40
50
40
65
40
50
40
45
Libertyville, IL (847) 680-7400
Series
Case Styles
Metric shown in italics.
SK
2.938
74.63
2.938
74.63
1.575
40.01
3.427
87.05
3.427
87.05
1.575
40.01
3.35
85.1
3.35
85.1
0.63
†
16.0
3.83
97.3
3.83
97.3
0.63
†
16.0
Case Dimensions
Metric shown in italics.
SK1
Part No.
A
B
C
D
E
(max) (max) (max) ± .015 (max)
± .38
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
4.34
110.0
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
1.16
29.5
1.16
29.5
1.53
38.9
1.28
32.5
1.28
32.5
1.78
45.2
3VSK1, 3ESK1
3VSK3, 3ESK3
3VSK7, 3VSK7M
3ESK7, 3ESK7M
6VSK1, 6ESK1
6VSK3, 6ESK3
6VSK7, 6VSK7M
6ESK7, 6ESK7M
10VSK1, 10ESK1
10VSK3, 10ESK3
10VSK7, 10VSK7M
10ESK7, 10ESK7M
Typical dimensions
.
07
.250
Terminals:
6.35
(5) Holes:
1.8
Dia.(4) Slot:
.07 x .16
1.8 x 4.1
Mounting
.188
holes:
4.78
Dia. (2)
3A-SK3
1.78 4.063 4.46
45.2 103.2 113.3
1.78
45.2
1.78
45.2
4.063 4.46
103.2 113.3
1.575
40.01
0.63
16.0
†
±.5
6A & 10A-SK3
†
±.02
Pricing
Consult your local Corcom sales representative for pricing.
Part No.
3VSK1
3VSK3
3VSK7
3VSK7M
6VSK1
6VSK3
6VSK7
6VSK7M
10VSK1
10VSK3
10VSK7
10VSK7M
Line Cord No. GA400
Part No.
3ESK1
3ESK3
3ESK7
3ESK7M
6ESK1
6ESK3
6ESK7
6ESK7M
10ESK1
10ESK3
10ESK7
10ESK7M
Unit Price
SK7 & SK7M
(with metric insert)
SK7: 6-32x1/4
SK7M: M3 x 0.5
D
B
SK
71
E
A
.235
R
6.0
C
.157
Dia
4.0
.910
23.1
1.295
32.9
1.575
40.0
Panel cutout (Back mount)
Tolerance
±
.005
0.13
Typical dimensions
.250
.
07
Teminals:
6.35
(3) Holes:
1.8
Dia.(2)
Slot:
1.8 x 4.1
.07 x .16
Libertyville, IL (847) 680-7400
SK
Series
20, 30 and 40 Amp
High Performance K Series
RFI Power Line Filters
UL Recognized
CSA Certified
VDE Approved*
SK Series
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 offer significantly higher
performance than the K series, which makes this series
particularly suited for equipment with high line-to-ground
as well as line-to-line conducted emissions.
The ESK models meet the very low leakage current
requirements of SEV, VDE portable equipment and (120
Volt) UL544 nonpatient medical equipment.
Models ESK6C and VSK6C additionally incorporate a
separate ground-circuit inductor to isolate the equipment
chassis from power line ground at RF frequencies.
Specifications
VSK Models
Maximum leakage current,
each line-to-ground
@ 120 VAC 60 Hz:
0.75 mA
@ 250 VAC 50 Hz:
1.25 mA
ESK Models
0.3 mA
0.5 mA
Hipot rating (one minute):
line-to-ground
line-to-line
Operating frequency:
Rated voltage:
Rated current:
20ESK/20VSK
30ESK/30VSK
40VSK
@120 VAC
20A
30A
40A
2250 VDC
1450 VDC
50/60 Hz
120/250 VAC
@ 250 VAC
16A
25A
36A
Minimum
insertion loss in dB:
Line-to-ground in 50 ohm circuit
Frequency
MHz
VSK
20A
7
23
25
29
43
44
48
48
48
VSK
30A
2
13
14
15
27
31
46
51
39
VSK
40A
2
15
18
22
40
43
45
50
30
ESK
20A
7
22
24
28
35
38
45
45
45
ESK
30A
2
13
15
15
27
31
40
41
36
Electrical Schematic
.01
.08
.10
.15
.5
1
5
10
30
Resistor location for reference only.
Line-to-line in 50 ohm circuit
SK
72
*40VSK6 in process
Frequency
MHz
.01
.08
.10
.15
.5
1
5
10
30
VSK
20A
1
10
8
8
45
60
65
60
60
VSK
30A
5
13
13
18
27
31
46
51
39
VSK
40A
7
14
16
30
65
65
65
57
50
ESK
20A
1
10
8
8
45
60
65
60
60
ESK
30A
5
12
12
18
60
60
51
43
43
Libertyville, IL (847) 680-7400
Series
Case Styles
Metric shown in italics.
SK
40VSK6
2.00
50.5
20ESK6 & 20VSK6
E
D
B
A
Terminals (5): 10-32
Torque: 27
±
3 in. lbs.
.203 x .156
Mounting slots (4):
5.16 x 3.96
C
Case Dimensions
Metric shown in italics.
Part No.
20ESK6,
20VSK6
Part No.
30ESK6,
30ESK6C
Holes:
.
187
4.75
A
B
C
D
E
(max) (max) (max) ± .015 (max)
± .38
5.09
127.3
2.25
57.2
1.78
45.2
4.063 4.46
103.2 129.3
A
B
C
D
E
(max) (max) (max) ± .020 (max)
± .51
4.92
125.0
4.92
125.0
6.0
152.4
3.12
2.75 3.437 4.0
79.25 69.85 87.3 101.6
3.12
2.75 3.437 4.0
79.25 69.85 87.3 101.6
3.12
79.25
2.18
55.4
3.5
88.9
3.96
100.6
Terminals: No. 8-32
Torque 18 ± 2 in.lb.
30VSK6,
30VSK6C
40VSK6
30ESK6 & 30VSK6
Pricing
Consult your local Corcom sales representative for pricing.
Part No.
20ESK6
20VSK6
30ESK6
30ESK6C
Part No.
30VSK6
30VSK6C
40VSK6
30ESK6C & 30VSK6C
Line Cord No. GA400
SK
73
Mounting slots:
.
250 x .156
Terminals: 8-32
6.35 x 3.96
Torque 27 ± 3 in.lb.
Libertyville, IL (847) 680-7400