SIOV metal oxide varistors
Housed (ThermoFuse) varistors, AdvanceD series
Series/Type:
Date:
ETFV25
April 2011
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information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Housed varistors
ThermoFuse varistors, ETFV25 series
ETFV25
Construction
Round varistor element, leaded
Coating: epoxy resin, flame-retardant to UL 94 V-0
Terminals: tinned copper wire, metal compound wire
Housing: thermoplastic, flame-retardant to UL 94 V-0
Features
Wide operating voltage range 115 … 420 V
RMS
Self-protected under abnormal overvoltage conditions
Very high surge current ratings of 20 kA
Approvals
UL
IEC
VDE
Applications
Air conditioner, refrigerator, TV, etc.
Power meter, inverter, telecom equipment, etc.
Transient voltage surge suppressors (TVSS)
Solar inverter
Delivery mode
Bulk (standard)
Typical applications
General technical data
Climatic category
Operating temperature
Storage temperature
Electric strength
Insulation resistance
Response time
Please read
Cautions and warnings
and
Important notes
at the end of this document.
to IEC 60068-1
to IEC 61051
to IEC 61051
to IEC 61051
40/85/56
40 ... + 85
40 ... + 85
≥
2.5
≥
100
< 25
°C
°C
kV
RMS
MΩ
ns
Page 2 of 15
Housed varistors
ThermoFuse varistors, ETFV25 series
ETFV25
Electrical specifications and ordering codes
Maximum ratings (T
A
= 85
°C)
Ordering code
Type
(untaped)
SIOV-
ETFV25K115E4
ETFV25K130E4
ETFV25K140E4
ETFV25K150E4
ETFV25K175E4
ETFV25K210E4
ETFV25K230E4
ETFV25K250E4
ETFV25K275E4
ETFV25K300E4
ETFV25K320E4
ETFV25K350E4
ETFV25K385E4
ETFV25K420E4
V
RMS
V
115
130
140
150
175
210
230
250
275
300
320
350
385
420
V
DC
V
150
170
180
200
225
270
300
320
350
385
420
460
505
560
i
max 1)
(8/20 µs)
A
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
20000
W
max
(2 ms)
J
170
185
195
215
245
290
315
345
375
410
445
495
600
700
P
max
W
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
B72225T4111K101
B72225T4131K101
B72225T4141K101
B72225T4151K101
B72225T4171K101
B72225T4211K101
B72225T4231K101
B72225T4251K101
B72225T4271K101
B72225T4301K101
B72225T4321K101
B72225T4351K101
B72225T4381K101
B72225T4421K101
Characteristics (T
A
= 25
°C)
Ordering code
Type
(untaped)
SIOV-
ETFV25K115E4
ETFV25K130E4
ETFV25K140E4
ETFV25K150E4
ETFV25K175E4
ETFV25K210E4
ETFV25K230E4
ETFV25K250E4
ETFV25K275E4
ETFV25K300E4
ETFV25K320E4
ETFV25K350E4
ETFV25K385E4
ETFV25K420E4
V
v
(1 mA)
V
180
205
220
240
270
330
360
390
430
470
510
560
620
680
∆V
v
(1 mA)
%
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
v
c,max
(i
c
)
V
300
340
360
395
455
545
595
650
710
775
840
910
1025
1120
i
c
A
150
150
150
150
150
150
150
150
150
150
150
150
150
150
C
typ
(1 kHz)
pF
2280
2010
1860
1740
1500
1245
1140
1050
945
870
810
750
675
630
B72225T4111K101
B72225T4131K101
B72225T4141K101
B72225T4151K101
B72225T4171K101
B72225T4211K101
B72225T4231K101
B72225T4251K101
B72225T4271K101
B72225T4301K101
B72225T4321K101
B72225T4351K101
B72225T4381K101
B72225T4421K101
1) Note: Thermal fuse may form open circuit after 1 impulse @ 20 kA, 8/20 µs test.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 15
Housed varistors
ThermoFuse varistors, ETFV25 series
ETFV25
Dimensional drawings
Weight
Nominal diameter
mm
25
V
RMS
V
115 ... 420
Weight
g
9.9 ... 18.6
Lead configuration
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 15
Housed varistors
ThermoFuse varistors, ETFV25 series
ETFV25
Reliability data
Test
Varistor voltage
Test methods/conditions
Requirement
The voltage between two terminals with To meet the specified value
the specified measuring current applied
is called V
V
(1 mA
DC
@ 0.2 ... 2 s).
The maximum voltage between two
terminals with the specified standard
impulse current (8/20 µs) applied.
1000 h at UCT
After having continuously applied the
maximum allowable AC 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 V
V
shall be
measured.
10 surge currents (8/20
µs),
unipolar,
interval 30 s, amplitude corresponding
to derating curve for 10 impulses at
20
µs
|∆V/V (1 mA)|
≤10%
(measured in direction of
surge current)
No visible damage
To meet the specified value
Clamping voltage
Endurance at upper
category temperature
|∆V/V (1 mA)|
≤10%
Surge current derating,
8/20
µs
Surge current derating,
2 ms
10 surge currents (2 ms), unipolar,
|∆V/V (1 mA)|
≤10%
interval 120 s, amplitude corresponding (measured in direction of
to derating curve for 10 impulses at
surge current)
2 ms
No visible damage
IEC 61051-1, test 4.9.2
Metal balls method, 2500 V
RMS
, 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.
No breakdown
Electric strength
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 15
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