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Home > Series > Power Line > SK

SK Series

3 to 40 Amp High Performance K Series RFI Power Line Filters for SMPS Emission Control

UL Recognized
CSA Certified
VDE Approved

Catalog Data Sheet

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 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 non-patient 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.

Electrical Schematic

Resistor location for reference only

Specifications

Maximum leakage current, each line to ground:
    VSK Models ESK Models
  3, 6 & 10 Amps    
  @ 120 VAC 60 Hz .4mA .21mA
  @ 250 VAC 50 Hz .7 mA .36 mA
       
  20, 30 & 40 Amps    
  @ 120 VAC 60 Hz .75 mA .3 mA
  @ 250 VAC 50 Hz 1.25 mA .5 mA
     
Hipot rating (one minute):
  line to ground 2250 VDC
  line to line 1450 VDC
     
Operating Frequency: 50 / 60 Hz
     
Rated voltage (max.): 250 VAC
     
Rated Current: 3A to 40A *
  * refer to part number for rating
Minimum insertion loss in dB:
Line to ground in 50 ohm circuit
Current Rating Frequency - MHz
.01 .08 .1 .15 .5 1 5 10 30
VSK Models
3A, 6A, 10A 4 23 25 29 43 44 42 42 30
20A 7 23 25 29 43 44 48 48 48
30A 2 13 14 15 27 31 46 51 39
40A 2 15 18 22 40 43 45 50 30
ESK Models
3A, 6A, 10A 4 22 24 28 42 40 36 36 27
20A 7 22 24 28 35 38 45 45 45
30A 2 13 15 15 27 31 40 41 36
Line to line in 50 ohm circuit
Current Rating Frequency - MHz
.01 .08 .1 .15 .5 1 5 10 30
VSK Models
3A, 6A 1 3 10 25 59 65 62 40 40
10A 1 3 3 10 55 65 65 50 50
20A 1 10 8 8 45 60 65 60 60
30A 5 13 13 13 60 60 51 43 43
40A 7 14 16 30 65 65 65 57 50
ESK Models
3A, 6A 1 3 10 25 59 65 62 40 40
10A 1 3 3 10 55 65 65 65 45
20A 1 10 8 8 45 60 65 60 60
30A 5 12 12 13 60 60 51 43 43
 

Case Styles

SK1

Typical Dimensions
Terminals (5) .250 Holes (4) .07 Dia.
6.35 1.8
Slot .07 x .16 Mounting Holes (2) .188 Dia
1.8 x 4.1 4.78

3A - EK3

6 & 10A SK3

Typical Dimensions
Wire Leads (min.) : 4.0 Wire Gauge: 18AWG
101.6
Mounting Holes (2)
 .188 Dia    
4.78

 

20A - SK6

Typical Dimensions
Terminals (5): No. 8-32 Torque: 18 ± 2 in. lb.
Mounting Holes (2) .188 Dia.    
4.78  

30ESK6 & 30VSK6

30ESK6C & 30VSK6C

Typical Dimensions
Terminals (5): No. 10-32 Torque: 27 ± 3 in. lb.
Mounting Holes (4) .250 x .156 Dia.    
6.35 x 3.96  

40VSK6

Typical Dimensions
Terminals (5): No. 10-32 Torque: 27 ± 3 in. lb.
Mounting Holes (4) .203 x .156 Dia.
5.16 x 3.96

SK7 & SK7M

Typical Dimensions
Terminals (3) .250 Holes (2) .07 Dia.
6.35 1.8
Slot .07 x .16 SK7 Inserts No. 6-32 x 1/4
1.8 x 4.1 SK7 M Inserts No. M-3 x 5

 

 

 

 

 

Recommended Panel Cutouts

tolerance ± .005 [0.13]

Back mount only

Case Dimensions

Part No. A B C D E
(max.) (max.) (max.) ± .015 ‡ (max.)
± .38
3VSK1, 3ESK1 3.85 2.07 1.16 2.938 3.35
97.8 52.6 29.5 74.63 85.1
3VSK3, 3ESK3 2.56 2.07 1.16 2.938 3.35
65.0 52.6 29.5 74.63 85.1
3VSK7, 3VSK7M,
3ESK7, 3ESK7M 		3.21 2.25 1.53 1.575 .063 †
81.5 57.2 38.9 40.01 16.0
6VSK1, 6ESK1 4.34 2.25 1.28 3.427 3.83
110.2 57.2 32.5 87.05 97.3

6VSK3, 6ESK3

3.05 2.25 1.28 3.427 3.83
77.5 57.2 32.5 87.05 97.3
6VSK7, 6VSK7M,
6ESK7, 6ESK7M 		3.21 2.25 1.78 1.575 0.63 †
81.5 57.2 45.2 40.01 16.0
10VSK1, 10ESK1 4.97 2.25 1.78 4.063 4.46
126.2 57.2 45.2 103.2 113.3
10VSK3, 10ESK3 3.69 2.25 1.78 4.063 4.46
93.7 57.2 45.2 103.2 113.3
10VSK7, 10ESK7M,
10ESK7, 10ESK7M 		4.34 2.25 1.78 1.575 0.63 †
110.0 57.2 45.2 40.01 16.0
20ESK6, 20VSK6 5.09 2.25 1.78 4.063 4.46
127.3 57.2 45.2 103.2 129.3
30ESK6, 30ESK6C,
30VSK6, 30VSK6C 		4.92 3.12 2.75 3.437 4.00
125.0 79.25 69.85 87.3 101.6
40VSK6 6.00 3.12 2.18 3.50 3.96
152.4 79.25 55.4 88.9 100.6
† ± .02 [.05]
‡ For 30A & 40A ± .020 [.51]

Part Numbers

Click on any part number for distributor stock status and eCommerce Links. For more information refer to the Corcom Part Numbering System reference.

3VSK1 3ESK1
3VSK3 3ESK3
3VSK7 3ESK7
3VSK7M 3ESK7M
6VSK1 6ESK1
6VSK3 6ESK3
6VSK7 6ESK7
6VSK7M 6ESK7M
10VSK1 10ESK1
10VSK3 10ESK3
10VSK7 10ESK7
10VSK7M 10ESK7M
20VSK6 20ESK6
30VSK6 30ESK6
30VSK6C 30ESK6C
40VSK6  

USA Customer Service: 1-800-468-2023
Corcom Products Direct: 1-847-680-7400
Germany: 49-89-6089-0
Dimensions are in inches and millimeters unless otherwise specified. Values in italics are metric equivalents. Dimensions are shown for reference purposes only. Specifications subject to change.