1) Note: Thermal fuse may form open circuit after 1 impulse @ 20 kA, 8/20 µs test.
2) Note: Nominal discharge current I
n
according to UL 1449, 4
th
edition.
Electrical specifications and ordering codes
Maximum ratings (T
A
= 85 °C)
Ordering code
Type
(untaped)
SIOV-
V
RMS
V
V
DC
V
i
max
1)
(8/20 µs)
A
I
n
2)
(8/20 µs)
15 times
A
W
max
(2 ms)
J
P
max
W
B72225T4111K101 ETFV25K115E4 115 150 20000 10000 170 1.0
B72225T4131K101 ETFV25K130E4 130 170 20000 10000 185 1.0
B72225T4141K101 ETFV25K140E4 140 180 20000 10000 195 1.0
B72225T4151K101 ETFV25K150E4 150 200 20000 10000 215 1.0
B72225T4171K101 ETFV25K175E4 175 225 20000 10000 245 1.0
B72225T4211K101 ETFV25K210E4 210 270 20000 10000 290 1.0
B72225T4231K101 ETFV25K230E4 230 300 20000 10000 315 1.0
B72225T4251K101 ETFV25K250E4 250 320 20000 10000 345 1.0
B72225T4271K101 ETFV25K275E4 275 350 20000 10000 375 1.0
B72225T4301K101 ETFV25K300E4 300 385 20000 10000 410 1.0
B72225T4321K101 ETFV25K320E4 320 420 20000 10000 445 1.0
B72225T4351K101 ETFV25K350E4 350 460 20000 10000 495 1.0
B72225T4381K101 ETFV25K385E4 385 505 20000 10000 600 1.0
B72225T4421K101 ETFV25K420E4 420 560 20000 10000 700 1.0
Characteristics (T
A
= 25 °C)
Ordering code
Type
(untaped)
SIOV-
V
v
(1 mA)
V
∆V
v
(1 mA)
%
v
c,max
(i
c
)
V
i
c
A
C
typ
(1 kHz)
pF
B72225T4111K101 ETFV25K115E4 180 ±10 300 150 2280
B72225T4131K101 ETFV25K130E4 205 ±10 340 150 2010
B72225T4141K101 ETFV25K140E4 220 ±10 360 150 1860
B72225T4151K101 ETFV25K150E4 240 ±10 395 150 1740
B72225T4171K101 ETFV25K175E4 270 ±10 455 150 1500
B72225T4211K101 ETFV25K210E4 330 ±10 545 150 1245
B72225T4231K101 ETFV25K230E4 360 ±10 595 150 1140
B72225T4251K101 ETFV25K250E4 390 ±10 650 150 1050
B72225T4271K101 ETFV25K275E4 430 ±10 710 150 945
B72225T4301K101 ETFV25K300E4 470 ±10 775 150 870
B72225T4321K101 ETFV25K320E4 510 ±10 840 150 810
B72225T4351K101 ETFV25K350E4 560 ±10 910 150 750
B72225T4381K101 ETFV25K385E4 620 ±10 1025 150 675
B72225T4421K101 ETFV25K420E4 680 ±10 1120 150 630
Housed varistors ETFV25
ThermoFuse varistors, ETFV25 series
Page 3 of 15Please read Cautions and warnings and
Important notes at the end of this document.
