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Metal Oxide Varistors
CT0402M4G
SMD multilayer varistor with Ni-barrier termination
B72590T0040M060
ISSUE DATE
28.01.2005
ISSUE
g
PUBLISHER
KB VS PE
PAGE
4/6
Recommended geometry of solder pad
A = 0.6 mm
B = 0.6 mm
C = 0.5 mm
E = 1.7 mm
Recommended soldering temperature profile
100 s
at max. temp.
100
20
0
50
100
Preheating zone
max. 2
180
T
245
215
300
Soldering zone
max. 7 s
150
200
VAR0543-W-E
250
t
s
(natural air cooling)
40 s
max. 2
Cooling-down zone
C
C/s
C/s
This component should be soldered within 12 months after delivery from EPCOS. They
should be left in their original packings to avoid soldering problems due to oxidized terminals.
Storage temperature:
-25 to 45 °C
Relative humidity: < 75% annual average, < 95% on maximum 30 days in a year.
The usage of mild non-activated fluxes for soldering is recommended, as well as proper
cleaning of the PCB.
The components are suited for Pb-free soldering.
A
A
D
C
B
B