SIOV metal oxide varistors
SMD varistors standard series, CU types
Series/Type:
Date:
B726*
January 2018
© EPCOS AG 2018. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
SMD varistors (CU types)
Standard series
B726*
EPCOS type designation system for SMD varistor standard series
CU
Construction:
CU Encapsulated chip
Case sizes:
3225 32 x 25
4032 40 x 32
Varistor voltage tolerance:
K
±10%
4032
K
275
G2
Maximum RMS operating voltage (V
RMS
):
275 275 V
Taping mode:
G2 Taped, 330-mm reel
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 23
SMD varistors (CU types)
Standard series
B726*
Construction
Cylindrical varistor element, encapsulated.
Encapsulation: thermoplastic, flame-retardant to UL 94 V-0.
Termination: tinned copper alloy, suitable for lead-free wave and reflow
soldering, and compatible with tin/lead solder.
Features
Electrical equivalents to leaded types SIOV-S05/S07
Operating voltage up to 300 V
RMS
SMD plastic package
RoHS-compatible
Suitable for lead-free soldering
PSpice models available
Approvals
UL
IEC
CSA approved (types with voltages higher than 30 V
RMS
)
Delivery mode
Blister tape, 330-mm reel
Packing unit: 1000 pcs.
V/I characteristics and derating curves
V/I and derating curves are attached to the data sheet. The curves are sorted by V
RMS
and
then by case size, which is included in the type designation.
General technical data
Maximum RMS operating voltage
Maximum DC operating voltage
Maximum surge current
Maximum energy absorption
Maximum clamping voltage
Operating temperature
Storage temperature
V
RMS
V
DC
i
max
W
max
v
c,max
11 ... 300
14 ... 385
100 ... 1200
300 ... 23000
36 ... 775
40/+85
40/+125
V
V
A
mJ
V
°C
°C
(8/20 µs) 1 time
(2 ms)
(8/20 µs)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 23
SMD varistors (CU types)
Standard series
B726*
Electrical specifications and ordering codes
Maximum ratings (T
A
= 85
°C)
i
max
(8/20 µs)
1 time
V
V
A
CU3225K11G2
B72650M0110K072
11
14
100
CU4032K11G2
B72660M0110K072
11
14
250
CU3225K14G2
B72650M0140K072
14
18
100
CU4032K14G2
B72660M0140K072
14
18
250
CU3225K17G2
B72650M0170K072
17
22
100
CU4032K17G2
B72660M0170K072
17
22
250
CU3225K20G2
B72650M0200K072
20
26
100
CU4032K20G2
B72660M0200K072
20
26
250
CU3225K25G2
B72650M0250K072
25
31
100
CU4032K25G2
B72660M0250K072
25
31
250
CU3225K30G2
B72650M0300K072
30
38
100
CU4032K30G2
B72660M0300K072
30
38
250
CU3225K35G2
B72650M0350K072
35
45
100
CU4032K35G2
B72660M0350K072
35
45
250
CU3225K40G2
B72650M0400K072
40
56
100
CU4032K40G2
B72660M0400K072
40
56
250
CU3225K50G2
B72650M0500K072
50
65
400
CU4032K50G2
B72660M0500K072
50
65
1200
CU3225K60G2
B72650M0600K072
60
85
400
CU4032K60G2
B72660M0600K072
60
85
1200
CU3225K75G2
B72650M0750K072
75
100
400
CU4032K75G2
B72660M0750K072
75
100
1200
CU3225K95G2
B72650M0950K072
95
125
400
CU4032K95G2
B72660M0950K072
95
125
1200
CU3225K115G2
B72650M0111K072
115
150
400
CU4032K115G2
B72660M0111K072
115
150
1200
CU3225K130G2
B72650M0131K072
130
170
400
CU4032K130G2
B72660M0131K072
130
170
1200
CU3225K140G2
B72650M0141K072
140
180
400
CU4032K140G2
B72660M0141K072
140
180
1200
CU3225K150G2
B72650M0151K072
150
200
400
CU4032K150G2
B72660M0151K072
150
200
1200
CU3225K175G2
B72650M0171K072
175
225
400
CU4032K175G2
B72660M0171K072
175
225
1200
1)
th
Note:
Nominal discharge current I
n
according to UL 1449, 4 edition.
Type
Ordering code
V
RMS
V
DC
I
n1)
(8/20 µs)
15 times
A
50
100
50
100
50
100
50
100
50
100
50
100
50
100
50
100
150
500
150
500
150
500
150
500
150
500
150
500
150
500
150
500
150
500
W
max
P
max
(2 ms)
mJ
300
800
400
900
500
1100
600
1300
700
1600
900
2000
1100
2500
1300
3000
1800
4200
2200
4800
2500
5900
3400
7600
3600
8400
4200
9500
4500
10000
4900
11000
5600
13000
mW
10
20
10
20
10
20
10
20
10
20
10
20
10
20
10
20
100
250
100
250
100
250
100
250
100
250
100
250
100
250
100
250
100
250
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 23
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