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
Bidirectional ESD protection up to 25 kV (ISO 10605)
Bidirectional ESD protection min. 8 kV contact, 15 kV air (IEC 61000-4-2)
High reliability, stable protection level, excellent long-term stability
Multi-strike capability
Low leakage current, low parasitic inductance
No derating up to +85 °C/ +125 °C (depending on type)
EMI/ RFI attenu
ation
Short response time of < 0.5 ns
Additional features for MLV types for surge protection
High surge current protection up to 5.000 A
Surge load capability up 4 kV for 8/20 µs acc. to IEC 61000-4-5
Surge voltage capability up to 2 kV for 10/700 µs acc. to IEC 61000-4-5
Continuous operation up to +125 °C without derating
Applications
Automation engineering
Interfaces, data lines, push buttons, se
rial 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.
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
v
V
clamp.max
C
typ
1)
C
max
1)
@ 1 mA 8/20 µs 1 MHz, 1 V 1 MHz, 1 V
[V] [V] [V] [pF] [pF]
0201 B72440C0050A160 5.5 11 22 15 -
0201 B72440C0050H160 5.5 17 33 7-
0201 B72440C0050H260 5.5 20 66 3-
0402 B72590D0050H260 5.6 90 - 0.6 0.9
0402 B72590D0150H060 15 23 66 10 15
0402 B72590D0200H060 20 30 80 10 13
0603 B72500D0050H160 5.6 150 - 0.6 0.9
0603 B72500D0150A060 15 22 42 160 -
0603 B72500D0200A060 22 25 50 56 -
0603 B72500D0300H060 30 50 120 10 15
Surge protection (acc. to IEC 61000-4-5), MLV types, single chips
EIA case size Ordering code V
DC, max
V
v
V
clamp.max
I
surge,max
W
max
@ 1 mA 8/20 µs 8/20 µs 2 ms
[V] [V] [V] [A] [mJ]
0805 B72510T0140K062 18 22 40 120 300
0805 B72510T0300K062 38 47 77 80 300
1206 B72520T0140K062 18 22 38 200 700
1206 B72520T0300K062 38 47 77 200 1.000
1206 B72520T0600K062 85 100 165 100 700
1210 B72530T0140K062 18 22 38 400 2.000
1210 B72530T0300K062 38 47 77 300 2.000
1210 B72530T0500K062 65 82 135 100 600
1812 B72580T0300K062 38 47 77 800 4.200
1812 B72580T0500
K062 65 82 135 200 1.600
1812 B72580T6750K072 100 120 250 400
2)
2.500
1812 B72580T6111K072 150 180 360 250
2)
3.200
2220 B72540T0300K062 38 47 77 1.200 12.000
2220 B72540T6300K062 38 47 77 5.000 15.000
2220 B72540T0400K062 56 68 110 1.000 9.000
2220 B72540T0500K062 65 82 135 800 5.600
2220 B72540T6500K062 65 82 135 4.500 15.000
1)
Measurement frequency:
f = 1 MHz for C < 100 pF, f = 1 kHz for C ≥ 100 pF
2)
I
surge, max
for 10/700 µs = 45 A (acc. IEC 61000-4-5)
