S20K250 EPCOS Inc, S20K250 Datasheet - Page 13

• Manufacturer Part Number: S20K250
• Description: VARISTOR 250VRMS 20MM RADIAL
• Manufacturer: EPCOS Inc
• Series: StandarDr

Specifications of S20K250

• Energy: 140J
• Varistor Voltage: 390V
• Current-surge: 8kA
• Number Of Circuits: 1
• Maximum Ac Volts: 250VAC
• Maximum Dc Volts: 320VDC
• Package / Case: Disc 20mm
• Technology: Metal Oxide
• Capacitance Value: 700pF
• Clamping Current: 100A
• Clamping Voltage: 650V
• Lead Style: Radial
• Ac Voltage Rating (max): 250VAC
• Dc Voltage Rating (max): 320VDC
• Operating Temp Range: -40C to 85C
• Mounting: Through Hole
• Surge Current (max): 8000A
• Lead Spacing: 10mm
• Product Depth (mm): 5.3mm
• Product Height (mm): 25.5mm
• Product Diameter (mm): 21.5mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 495-2404; B72220S 251K101; B72220S0251K101; B72220S251K101; B72220S251K101V57; S20K250

Dimensional drawing
Dimensions
Ordering code
B72205S0110K101
B72207S0110K101
B72210S0110K101
B72214S0110K101
B72220S0110K101
B72205S0140K101
B72207S0140K101
B72210S0140K101
B72214S0140K101
B72220S0140K101
B72205S0170K101
B72207S0170K101
B72210S0170K101
B72214S0170K101
B72220S0170K101
B72205S0200K101
B72207S0200K101
B72210S0200K101
B72214S0200K101
B72220S0200K101
Please read Cautions and warnings and
Important notes at the end of this document.
1) Seating plane to IEC 60717
ød
b
e
mm
10.0
10.0
10.0
10.0
s
5.0
5.0
7.5
7.5
5.0
5.0
7.5
7.5
5.0
5.0
7.5
7.5
5.0
5.0
7.5
7.5
a
±1
1)
Bottom view
e
a ±1
mm
1.2
1.2
1.4
1.4
1.5
1.3
1.3
1.5
1.5
1.6
1.4
1.4
1.6
1.7
1.8
1.2
1.2
1.8
1.9
2.1
VAR0408-C
b
mm
12.0
15.5
21.5
12.0
15.5
21.5
12.0
15.5
21.5
12.0
15.5
21.5
max
7.0
9.0
7.0
9.0
7.0
9.0
7.0
9.0
13
Weight
Nominal diameter
mm
10
14
20
The weight of varistors in between these
voltage classes can be interpolated.
5
7
11/07
s
mm
3.3
3.4
4.0
4.0
4.5
3.4
3.5
4.2
4.2
4.6
3.5
3.6
4.4
4.4
4.8
3.5
3.6
4.5
4.6
5.1
max
Leaded varistors
StandarD series
h
mm
11.0
14.5
18.5
25.5
11.0
14.5
18.5
25.5
11.0
14.5
18.5
25.5
11.0
14.5
18.5
25.5
max
8.5
8.5
8.5
8.5
V
V
11 … 460
11 … 460
11 … 680
11 … 1000
11 … 1000
RMS
I
mm
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
min
Weight
g
0.3 … 0.7
0.4 … 1.1
1.0 … 3.0
1.4 … 7.6
2.7 … 15.7
d ±0.05
mm
0.6
0.6
0.8
0.8
1.0
0.6
0.6
0.8
0.8
1.0
0.6
0.6
0.8
0.8
1.0
0.6
0.6
0.8
0.8
1.0