Epcos B 72540 T Service Manual
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Metal Oxide Varistors CT0402S14AHSG
SMD multilayer varistor with Ni-barrier termination B72590T8140S160
Designation system
CT = Chip with three-layer- termination (Ag/Ni/Sn)
0402 = Dimensions of the device 04 x 02 (length x width in 1/100 inch)
S…A = Special tolerance of the varistor voltage
14 = Maximum operating voltage
HS = Designed for protection of high speed data lines
G = Taped version (cardboard tape, 7” reel, 10000 pieces/reel)
Figure
l
k
(all dimensions in mm)
b
l = 1.0 ± 0.15
b = 0.5 ± 0.10
s = 0.5 ± 0.10
k = 0.2 ± 0.10
s
As far as patents or other rights of third parties are concerned, liability is only assumed for components per se, not for
applications, processes and circuits implemented within components or assemblies. The information describes the type of
component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved.
ISSUE DATE 28.01.2005 ISSUE e PUBLISHER KB VS PE PAGE 1/7
Metal Oxide Varistors CT0402S14AHSG
C
A
SMD multilayer varistor with Ni-barrier termination B72590T8140S160
V-I-characteristic
200
200
V
v
100
80
60
40
20
10
8
6
4
2
1
-5
10
-4
10
-3
10
-2
10
-1
10
10
VAR9733A
0
101A
i
Max. current, energy and average power dissipation
depending on ambient temperature
%
100
90
80
70
60
50
40
30
20
10
0
-55 70 80 90 100 110 120 130 140 150 °
mbient temperature
ISSUE DATE 28.01.2005 ISSUE e PUBLISHER KB VS PE PAGE 2/7
Metal Oxide Varistors CT0402S14AHSG
SMD multilayer varistor with Ni-barrier termination B72590T8140S160
Electrical data
Maximum operating voltage
RMS voltage V
DC voltage VDC = 16 V
Varistor voltage (@ 1 mA) VV = 23 up to 33 V
Maximum clamping voltage (@ 1 A) VC = 66 V
Maximum average power dissipation P
Maximum surge current (8/20 µs) I
Maximum energy absorption (ESD) E
(@ ESD according to IEC 61000-4-2, 15 kV air discharge)
Capacitance (@ 1 MHz, 1V, 25 °C, typical value) C = 10 pF
= 14 V
RMS
= 3 mW
max
= 1 x 2 A
max
= 30 mJ
max
Response time < 0.5 ns
Operating temperature -40 … +85 °C
Storage temperature (mounted parts) -40 … +125 °C
Termination material Ag/Ni/Sn
Part weight 0.002 g
(thickness not specified, adjusted to fulfill wettability specification according to
IEC 60068-2-58)
Application note
The described component is designed to meet ESD level 4 requirements according to
IEC 61000-4-2 (8 kV contact discharge, 150 pF, 330 Ω)
ISSUE DATE 28.01.2005 ISSUE e PUBLISHER KB VS PE PAGE 3/7
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