Leaded Varistors
Standard series
Series/Type:
Ordering code:
SIOV-S14K350
B72214S 351K101
Date:
Version:
2010-10-11
e
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Identification/Classification 1
(header 1 + top left header bar):
Leaded Varistors
Identification/Classification 2
(header 2 + bottom left header bar):
Standard series
Ordering code: (top right header bar)
B72214S 351K101
Series/Type: (top right header bar)
SIOV-S14K350
Preliminary data (optional):
(if necessary)
Department:
PPD VAR PD
Date:
2010-10-11
Version:
e
Prepared by:
Terry Tian
Release signed by:
Tony Sun
Release signed QS:
Raymond Zhao
Modifications/Remarks:
New layout
EPCOS AG 2010. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Applications
Overvoltage protection
Features
•
UL approval to UL1449 (file number E321126), for use in Type 3 SPD’s
SIOV nomenclature
S
14
K
350
=
=
=
=
Disk type
Rated disk diameter
Tolerance of VV at 1mA: ±10%
Max. AC operating voltage
General technical data
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2010-10-11
Page 2 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Dimensional drawings in mm
bmax
hmax
smax
e
lmin
a
∅d
1)
=
=
=
=
=
=
=
15.5
19.0
5.5
7.5 ±1.0
25.0
2.5 ±1.0
0.8 ±0.05
1)
Seating plane in accordance
with IEC 60717
Electrical data
Maximum Ratings (85 °C):
Max. AC operating voltage
Max. DC operating voltage
Surge current (8/20 µs)
Energy absorption (2 ms)
Average power dissipation
Characteristics (25 °C):
Varistor voltage at 1 mA
Clamping voltage at 50 A (8/20 µs)
Typ. capacitance at 1 kHz
1 time
1 time
VRMS
VDC
Imax
Wmax
Pmax
=
=
=
=
=
350 V
460 V
4500 A
80.0 J
0.6 W
VV
VC,max
C
=
=
=
560 V ±10%
910 V
265 pF
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2010-10-11
Page 3 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
V/I Characteristic
VAR9765A
5000
v
4000
V
2000
1000
800
600
400
200
100
80
60
50
10 -5
10 -4
10 -3
10 -2
10 -1
10 0
10 1
10 2
10 3
A 10 4
i
Derating
10000
S14K50 ... 320
i
max.
t
1000
r
1x
2x
10 x
10^2 x
10^3 x
100
10^4 x
10^5 x
10^6 x
inf.
10
1
0,1
10
100
1000
10000
t r [µs]
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2010-10-11
Page 4 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Reliability Data Electrical
Characteristics
Test Methods/Description
Specifications
Varistor
Voltage
The voltage between two terminals with the
specified measuring current applied is called Vv (1
mADC @ 0.2 … 2 s).
To meet the specified
value.
Clamping
Voltage
The maximum voltage between two terminals with
the specified standard impulse current (8/20µs)
illustrated below applied.
To meet the specified
value.
Surge current
derating,
8/20 µs
CECC 42 000, test C 2.1
|∆V/V (1 mA)| ≤10%
100 surge currents (8/20 µs), unipolar, interval 30 s,
amplitude corresponding to derating curve for 100
impulses at 20 µs
(measured in direction of
surge current)
CECC 42 000, test C 2.1
|∆V/V (1 mA)| ≤10%
100 surge currents (2ms), unipolar, interval 120s,
amplitude corresponding to derating curve for 100
impulses at 2 ms
(measured in direction of
surge current)
Surge current
derating,
2 ms
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
No visible damage
No visible damage
2010-10-11
Page 5 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Reliability Data Mechanical
Characteristics
Tensile strength
Test Methods/Description
Specifications
IEC 60068-2-21, test Ua1
|∆V/V (1 mA)| ≤5%
After gradually applying the force specified below
and keeping the unit fixed for 10 s, the terminal shall
be visually examined for any damage.
No break of solder joint,
no wire break
Force for wire diameter: 1.0 mm = 20 N
Vibration
IEC 60068-2, test Fc
|∆V/V (1 mA)| ≤5%
Frequency range:
10 .... 55 Hz
Amplitude:
0.75 mm or 98 m/s²
Duration:
6 h (3 x 2 h)
Pulse:
sine wave
No visible damage
After repeatedly applying a single harmonic vibration
according to the table above, the change of Vv shall
be measured and the part shall be visually
examined.
Solderability
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 visu ally
examined.
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
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 surface
shall be covered with a
smooth and bright solder
coating with no more than
small amounts of
scattered imperfections
such as pinholes or unwetted or de-wetted
areas. These
imperfections shall not be
concentrated in one area.
2010-10-11
Page 6 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Characteristics
Test Methods/Description
Specifications
Resistance to
soldering heat
IEC 60068-2-20, test Tb, method 1A, 260 °C, 10 s:
|∆V/V (1 mA)| ≤5%
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 unit, be held there for 10 ±1 s
and then be stored at room temperature and normal
humidity for 1 to 2 hours. The change of Vv shall be
measured and the part shall be visually examined.
No visible damage
Bump
IEC 60068-2-29, test Eb
|∆V/V (1 mA)| ≤5%
Pulse duration:
6 ms
2
Max. acceleration:
400m/s
Number of bumps:
4000
Pulse:
half sine
No visible damage
IEC 60695-2-2 (needle flame test)
5 s max.
Flammability
Severity: vertical 10 s
Electric strength
No breakdown
CECC 42 000, test 4.7
Metal balls method, 2500 VRMS, 60 s
The varistor is placed in a container holding 1.6 ±0.2
mm diameter metal balls such that only the
terminations of the varistor are protruding.
The specified voltage shall be applied between both
terminals of the specimen connected together and
the electrode inserted between the metal balls.
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2010-10-11
Page 7 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Reliability Data Environmental
Characteristics
Max. AC operating
voltage
Damp heat, steady
state
Climatic sequence
Fast temperature
cycling
Test Methods/Description
Specifications
CECC 42 000, test 4.20 1000 h at UCT
After having continuously applied the maximum
allowable voltage at UCT ±2 °C for 1000 h, the
specimen shall be stored at room temperature and
normal humidity for 1 to 2 h.
Thereafter, the change of Vv shall be measured.
|∆V/V (1 mA)| ≤10%
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 VDC.
Then stored at room temperature and normal
humidity for 1 to 2 h.
Thereafter, the change of Vv shall be measured.
Thereafter, insulation resistance Rins shall be
measured according to CECC 42 000, test 4.8 at V =
500 V.
|∆V/V (1 mA)| ≤10%
CECC 42 000, test 4.16
The specimen shall be subjected to:
a) dry heat at UCT, 16 h
b) damp heat, 1st cycle: 55 °C, 93% r.H., 24 h
c) cold, LCT, 2 h
d) damp heat, additional 5 cycles: 55 °C/25 °C, 93%
r.H., 24 h/cycle.
Then the specimen shall be stored at room
temperature and normal humidity for 1 to 2 h.
Thereafter, the change of Vv shall be measured.
Thereafter, insulation resistance Rins shall be
measured according 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
Rins ≥1 MΩ
|∆V/V (1 mA)| ≤10%
Rins ≥1 MΩ
|∆V/V (1 mA)| ≤5%
No visible damage
Note:
UCT = Upper category temperature
LCT = Lower category temperature
Rins = Insulation resistance to CECC 42 000, test 4.8
PPD VAR PD
Please read Cautions and warnings and
Important notes at the end of this document.
2010-10-11
Page 8 of 11
Leaded Varistors
Standard series
B72214S 351K101
SIOV-S14K350
Cautions and warnings
General
1.
EPCOS metal oxide varistors (SIOVs) are designed for specific applications and should not be used for
purposes not identified in our specifications, application notes and data books unless otherwise agreed with
EPCOS during the design-in-phase.
2.
Ensure suitability of SIOVs through reliability testing during the design-in phase. The SIOVs should be
evaluated taking into consideration worst-case conditions.
3.
For applications of SIOVs in line-to ground circuits based on various international and local standards there
are restrictions existing or additional safety measures required.
Storage
1.
Store SIOVs only in original packaging. Do not open the package before storage.
2.
Storage conditions in original packaging:
Storage temperature:
Relative humidity:
Dew precipitation:
-25 °C … +45 °C