S20K250 EPCOS Inc, S20K250 Datasheet - Page 20

• 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

Reliability data
Test
Resistance to soldering heat IEC 60068-2-20, test Tb, method 1A,
Tensile strength
Vibration
Bump
Flammability
Note:
UCT = Upper category temperature / LCT = Lower category temperature / R
Please read Cautions and warnings and
Important notes at the end of this document.
Leaded varistors
StandarD series
Test methods/conditions
260 °C, 10 s:
Each lead shall be dipped into a solder
bath having a temperature of 260 ±5 °C
to a point 2.0 to 2.5 mm from the body of
the specimen, be held there for 10 ±1 s
and then be stored at room temperature
and normal humidity for 1 to 2 h.
The change of V
and the specimen shall be visually
examined.
IEC 60068-2-21, test Ua1
After gradually applying the force
specified below and keeping the unit
fixed for 10 s, the terminal shall be
visually examined for any damage.
Force for wire diameter:
0.6 mm = 10 N
0.8 mm = 10 N
1.0 mm = 20 N
IEC 60068-2, test Fc
Frequency range: 10 … 55 Hz
Amplitude:
Duration:
Pulse:
After repeatedly applying a single
harmonic vibration according to the
table above.
The change of V
and the specimen shall be visually
examined.
IEC 60068-2-29, test Eb
Pulse duration:
Max. acceleration: 400 m/s
Number of bumps: 4000
Pulse:
IEC 60695-2-2 (needle flame test)
Severity: vertical 10 s
v
v
shall be measured
shall be measured
20
0.75 mm or 98 m/s
6 h (3 · 2 h)
sine wave
half sine
6 ms
11/07
2
ins
= Insulation resistance to CECC 42 000, test 4.8
2
Requirement
|
No visible damage
|
No break of solder joint,
no wire break
|
No visible damage
|
No visible damage
5 s max.
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
|
|
|
|
≤5%
≤5%
≤5%
≤5%