Ceramic transient voltage suppressors
SMD disk varistors standard series
Series/Type:
Date:
August 2011
© EPCOS AG 2015. 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 disk varistors (CU varistors)
Standard series
EPCOS type designation system for SMD disk 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 35
SMD disk varistors (CU varistors)
Standard series
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
UL approved
CSA approved (types with voltages higher than 130 V
RMS
)
PSpice models available
Applications
Overvoltage protection and transient suppression in control electronics, detectors and
sensors, touch screens, plug-in cards, remote controls
Design
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.
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 power dissipation
Maximum clamping voltage
Operating temperature
Storage temperature
Temperature derating
Climatic category:
40/+85
°C
V
RMS,max
V
DC,max
I
surge,max
W
max
P
diss,max
V
clamp,max
T
op
LCT/UCT
11 ... 300
14 ... 385
100 ... 1200
300 ... 23000
10 ... 250
36 ... 775
40/+85
40/+125
V
V
A
mJ
mW
V
°C
°C
(8/20 µs)
(2 ms)
(8/20 µs)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 35
SMD disk varistors (CU varistors)
Standard series
Electrical specifications and ordering codes
Maximum ratings (T
op,max
= 85
°C)
Type
Ordering code
V
RMS,max
V
CU3225K11G2
CU4032K11G2
CU3225K14G2
CU4032K14G2
CU3225K17G2
CU4032K17G2
CU3225K20G2
CU4032K20G2
CU3225K25G2
CU4032K25G2
CU3225K30G2
CU4032K30G2
CU3225K35G2
CU4032K35G2
CU3225K40G2
CU4032K40G2
CU3225K50G2
CU4032K50G2
CU3225K60G2
CU4032K60G2
CU3225K75G2
CU4032K75G2
CU3225K95G2
CU4032K95G2
CU3225K115G2
CU4032K115G2
CU3225K130G2
CU4032K130G2
CU3225K140G2
CU4032K140G2
CU3225K150G2
CU4032K150G2
CU3225K175G2
CU4032K175G2
B72650M0110K072
B72660M0110K072
B72650M0140K072
B72660M0140K072
B72650M0170K072
B72660M0170K072
B72650M0200K072
B72660M0200K072
B72650M0250K072
B72660M0250K072
B72650M0300K072
B72660M0300K072
B72650M0350K072
B72660M0350K072
B72650M0400K072
B72660M0400K072
B72650M0500K072
B72660M0500K072
B72650M0600K072
B72660M0600K072
B72650M0750K072
B72660M0750K072
B72650M0950K072
B72660M0950K072
B72650M0111K072
B72660M0111K072
B72650M0131K072
B72660M0131K072
B72650M0141K072
B72660M0141K072
B72650M0151K072
B72660M0151K072
B72650M0171K072
B72660M0171K072
11
11
14
14
17
17
20
20
25
25
30
30
35
35
40
40
50
50
60
60
75
75
95
95
115
115
130
130
140
140
150
150
175
175
V
DC,max
V
14
14
18
18
22
22
26
26
31
31
38
38
45
45
56
56
65
65
85
85
100
100
125
125
150
150
170
170
180
180
200
200
225
225
I
surge,max
(8/20 µs)
A
100
250
100
250
100
250
100
250
100
250
100
250
100
250
100
250
400
1200
400
1200
400
1200
400
1200
400
1200
400
1200
400
1200
400
1200
400
1200
W
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
P
diss,max
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 4 of 35
SMD disk varistors (CU varistors)
Standard series
Characteristics (T
A
= 25
°C)
Type
CU3225K11G2
CU4032K11G2
CU3225K14G2
CU4032K14G2
CU3225K17G2
CU4032K17G2
CU3225K20G2
CU4032K20G2
CU3225K25G2
CU4032K25G2
CU3225K30G2
CU4032K30G2
CU3225K35G2
CU4032K35G2
CU3225K40G2
CU4032K40G2
CU3225K50G2
CU4032K50G2
CU3225K60G2
CU4032K60G2
CU3225K75G2
CU4032K75G2
CU3225K95G2
CU4032K95G2
CU3225K115G2
CU4032K115G2
CU3225K130G2
CU4032K130G2
CU3225K140G2
CU4032K140G2
CU3225K150G2
CU4032K150G2
CU3225K175G2
CU4032K175G2
V
V
(1 mA)
V
18
18
22
22
27
27
33
33
39
39
47
47
56
56
68
68
82
82
100
100
120
120
150
150
180
180
205
205
220
220
240
240
270
270
∆V
V
%
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
V
clamp,max
V
36
36
43
43
53
53
65
65
77
77
93
93
110
110
135
135
135
135
165
165
200
200
250
250
300
300
340
340
360
360
395
395
455
455
I
clamp
(8/20 µs)
A
1
2.5
1
2.5
1
2.5
1
2.5
1
2.5
1
2.5
1
2.5
1
2.5
5
10
5
10
5
10
5
10
5
10
5
10
5
10
5
10
5
10
C
typ
(1 kHz, 1 V)
pF
1750
2750
1450
2300
1200
1900
980
1600
850
1400
720
1200
620
1050
520
900
300
530
250
480
210
430
135
260
110
220
100
200
95
180
90
170
75
150
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 35
