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 |
|
|
Case Styles
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] |
Ordering and Design Information
Click on any part number for 3D CAD models, customer drawings, distributor stock status and eCommerce Links. For more information refer to the Corcom Part Numbering System reference.
|
