S20K250 EPCOS Inc, S20K250 Datasheet - Page 22

• 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

v/i characteristics
v = f (i) – for explanation of the characteristics refer
SIOV-S07 …
Please read Cautions and warnings and
Important notes at the end of this document.
v
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
V
8
6
4
2
1
10
K420
K460
K300
K250
K150
K130
K385
to “General technical information”, 1.6.3
K95
K60
K40
K30
K20
K14
_
5
10
K440
Leaded varistors
StandarD series
A
K275
K230
K175
K140
K115
_
K75
K50
K35
K25
K17
K11
4
10
_
K50
3
10
K420
K460
K385
K300
K250
K150
K130
_
K95
K60
K40
K30
K20
K14
2
10
K275
K230
K175
K140
K115
K440
_
K75
K35
K25
K17
K11
1
22
10
0
11/07
B
A = Leakage current
B = Protection level
10
1
10
2
10
VAR0443-Q
3
i
for worst-case
varistor tolerances
A
10
4