Metal Oxide Varistor Disc type
SIOV-Q14K550 Ordering code: B72214Q0551K101
Data sheet
ISSUE DATE 22.05.02 ISSUE a PUBLISHER KH PE VAR PAGE 6/6
Characteristics Test Methods/Description Specifications
E
N
Max. AC
operating
voltage
After being continuously applied the maximum
allowable voltage at 85 ± 2°C for 1000 hours,
the specimen shall be stored at room
temperature and normal humidity for 1 to 2
hours. Thereafter, the change of V
v
shall be
measured.
| ∆ V/V (1 mA) |
≤ 10 %
V
I
Damp heat,
steady state
The specimen shall be subjected to 40 ± 2°C, 90
to 95 % r.H. for 56 days without load and then
stored at room temperature and normal humidity
for 1 to 2 hours. Thereafter, the change of V
v
shall be measured.
| ∆ V/V (1 mA) |
≤ 10 %
R
O
N
M
Climatic
sequence
The specimen shall be subjected to:
a) dry heat at +85°C, 16 h
b) damp heat, 1st cycle: 55°C, 93 % r.H., 24 h
c) cold, -40°C, 2 h
d) damp heat, additional
5 cycles: 55°C, 93 % r.H., 24 h/cycle
Then the specimen shall be stored at room
temperature and normal humidity for 1 to 2
hours. Thereafter, the change of V
v
shall be
measured.
| ∆ V/V (1 mA) |
≤ 10 %
E
N
T
A
L
Fast
temperature
cycling
The temperature cycle shown below shall be
repeated 5 times. Then the specimen shall be
stored at room temperature and normal humidity
for 1 to 2 hours. The change of V
v
and
mechanical damage shall be examined.
Step Temperature (°C) Period (min.)
1 -40 ± 3 30 ± 3
2 transition time < 10 s
3 85 ± 2 30 ± 3
| ∆ V/V (1 mA) |
≤ 5 %
No visible damage
Note: More details can be found in the data book 'SIOV Metal Oxide Varistors', Ordering No. EPC:
62002-7600
EPCOS AG 2002. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and
Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless
otherwise agreed.
