Protection against ESD and surge currents for
industrial use
Industrial applications and automation equipment require both reliable ESD protection (e.g. on
data line interfaces) as well as protection against severe surges or high-energy transients,
such as caused by switching of large capacitive or inductive loads. EPCOS CTVS
®
(ceramic
transient voltage suppressors)
and CeraDiodes
®
are ceramic multilayer components for
reliable protection against such electrical transients.
CeraDiodes
®
provide cost-efficient but reliable ESD protection up to 30 kV. The portfolio of
EPCOS multilayer varistors provides additionally high surge protection capability and are qualified
to protect industrial applications against high surge currents of up to 5 kA acc. to IEC 61000-4-5.
CTVS
®
can replace semiconductor diodes in many applications.
Features
Cera Diodes
®
for ESD protection
¼
Bidirectional ESD protection up to 25 kV (ISO 10605)
¼
Bidirectional ESD protection min. 8 kV contact, 15 kV air (IEC 61000-4-2)
¼
High reliability, stable protection level, excellent long-term stability
¼
Multi-strike capability
¼
Low leakage current, low parasitic inductance
¼
No derating up to +85 °C/ +125 °C (depending on type)
¼
EMI/ RFI attenuation
¼
Short response time of < 0.5 ns
Additional features for MLV types for surge protection
¼
High surge current protection up to 5.000 A
¼
Surge load capability up 4 kV for 8/20 µs acc. to IEC 61000-4-5
¼
Surge voltage capability up to 2 kV for 10/700 µs acc. to IEC 61000-4-5
¼
Continuous operation up to +125 °C without derating
Applications
¼
¼
¼
¼
¼
Automation engineering
Interfaces, data lines, push buttons, serial ports
Industrial PCs and monitoring systems
Power supplies
PoE (power over ethernet)
More details and applications under www.epcos.com/ctvs_ie
Important information:
Some parts of this publication contain statements about the suitability of our products for certain areas of application. These
statements are based on our knowledge of typical requirements that are often placed on our products. We expressly point out that these statements
cannot be regarded as binding statements about the suitability of our products for a particular customer application. It is incumbent on the customer
to check and decide whether a product is suitable for use in a particular application. This publication is only a brief product survey which may be
changed from time to time. Our products are described in detail in our data sheets. The
Important notes
(www.epcos.com / ImportantNotes) and the
product-specific
Cautions and warnings
must be observed. All relevant information is available through our sales offices.
Product range
Electrical specifications and ordering codes
ESD protection (acc. to IEC 61000-4-2, level 4), CeraDiodes, single chips
EIA case size
Ordering code
V
DC, max
[V]
0201
0201
0201
0402
0402
0402
0603
0603
0603
0603
B72440C0050A160
B72440C0050H160
B72440C0050H260
B72590D0050H260
B72590D0150H060
B72590D0200H060
B72500D0050H160
B72500D0150A060
B72500D0200A060
B72500D0300H060
5.5
5.5
5.5
5.6
15
20
5.6
15
22
30
V
v
@ 1 mA
[V]
11
17
20
90
23
30
150
22
25
50
V
clamp.max
8/20 µs
[V]
22
33
66
-
66
80
-
42
50
120
C
typ 1)
C
max 1)
1 MHz, 1 V 1 MHz, 1 V
[pF]
[pF]
15
7
3
0.6
10
10
0.6
160
56
10
-
-
-
0.9
15
13
0.9
-
-
15
1)
Measurement frequency:
f = 1 MHz for C < 100 pF, f = 1 kHz for C ≥ 100 pF
Surge protection (acc. to IEC 61000-4-5), MLV types, single chips
EIA case size
Ordering code
V
DC, max
[V]
0805
0805
1206
1206
1206
1210
1210
1210
1812
1812
1812
1812
2220
2220
2220
2220
2220
B72510T0140K062
B72510T0300K062
B72520T0140K062
B72520T0300K062
B72520T0600K062
B72530T0140K062
B72530T0300K062
B72530T0500K062
B72580T0300K062
B72580T0500K062
B72580T6750K072
B72580T6111K072
B72540T0300K062
B72540T6300K062
B72540T0400K062
B72540T0500K062
B72540T6500K062
18
38
18
38
85
18
38
65
38
65
100
150
38
38
56
65
65
V
v
@ 1 mA
[V]
22
47
22
47
100
22
47
82
47
82
120
180
47
47
68
82
82
V
clamp.max
8/20 µs
[V]
40
77
38
77
165
38
77
135
77
135
250
360
77
77
110
135
135
I
surge,max
8/20 µs
[A]
120
80
200
200
100
400
300
100
800
200
400
2)
250
1.200
5.000
1.000
800
4.500
2)
W
max
2 ms
[mJ]
300
300
700
1.000
700
2.000
2.000
600
4.200
1.600
2.500
3.200
12.000
15.000
9.000
5.600
15.000
2)
I
surge, max
for 10/700 µs = 45 A (acc. IEC 61000-4-5)
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