S20K275 EPCOS Inc, S20K275 Datasheet - Page 19

VARISTOR 275V RMS 20MM RADIAL

S20K275

Manufacturer Part Number
S20K275
Description
VARISTOR 275V RMS 20MM RADIAL
Manufacturer
EPCOS Inc
Series
StandarDr
Datasheet

Specifications of S20K275

Varistor Voltage
430V
Current-surge
8kA
Number Of Circuits
1
Maximum Ac Volts
275VAC
Maximum Dc Volts
350VDC
Energy
151J
Package / Case
Disc 20mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
495-1417
B72220S 271K101
B72220S0271K101
B72220S271K101

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Reliability data
Test
Climatic sequence
Fast temperature cycling
Damp heat, steady state
Solderability
Please read Cautions and warnings and
Important notes at the end of this document.
Test methods/conditions
CECC 42 000, test 4.16
The specimen shall be subjected to:
a) dry heat at UCT, 16 h
b) damp heat, 1st cycle:
c) cold, LCT, 2 h
d) damp heat, additional 5 cycles:
Then the specimen shall be stored at
room temperature and normal humidity
for 1 to 2 h.
Thereafter, the change of V
measured. Thereafter, insulation resis-
tance R
to CECC 42 000, test 4.8 at V = 500 V.
IEC 60068-2-14, test Na, LCT/UCT,
dwell time 30 min, 5 cycles
The specimen shall be subjected to
40 ±2 °C, 90 to 95% r. H. for 56 days
without load / with 10% of the maximum
continuous DC operating voltage V
Then stored at room temperature and
normal humidity for 1 to 2 h.
Thereafter, the change of V
measured. Thereafter, insulation resis-
tance R
to CECC 42 000, test 4.8 at V = 500 V.
IEC 60068-2-20, test Ta,
method 1 with modified conditions for
lead-free solder alloys: 245 °C, 3 s:
After dipping the terminals to a depth
of approximately 3 mm from the body
in a soldering bath of 245 °C for 3 s, the
terminals shall be visually examined.
55 °C, 93% r. H., 24 h
55 °C/25 °C, 93% r. H., 24 h/cycle.
ins
ins
shall be measured according
shall be measured according
19
11/07
v
v
shall be
shall be
Leaded varistors
StandarD series
DC
.
Requirement
|
R
|
No visible damage
|
R
The inspection shall be
carried out under adequate
light with normal eyesight or
with the assistance of a
magnifier capable of giving
a magnification of 4 to
10 times. The dipped sur-
face shall be covered with
a smooth and bright solder
coating with no more than
small amounts of scattered
imperfections such as
pinholes or un-wetted or
de-wetted areas. These
imperfections shall not be
concentrated in one area.
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
ins
ins
≥1 MΩ
≥1 MΩ
|
|
|
≤10%
≤5%
≤10%

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