Multilayer varistors (MLVs)
Automotive series
6
Solderability tests
Test
Standard
Test conditions
Sn-Pb soldering
Test conditions
Pb-free soldering
Criteria/ test results
Covering of 95% of
Wettability
IEC
Immersion in
Immersion in
60068-2-58 60/40 SnPb solder Sn96.5Ag3.0Cu0.5 end termination,
using non-activated solder using non- or checked by visual
flux at 215 ± 3 °C
for 3 ± 0.3 s
low activated flux
at 245 ± 5 °C
for 3 ± 0.3 s
inspection
Leaching
IEC
Immersion in
Immersion in
No leaching of
resistance
60068-2-58 60/40 SnPb
solder using
Sn96.5Ag3.0Cu0.5 contacts
solder using non- or
mildly activated flux low activated flux
without preheating without preheating
at 260 ± 5 °C
for 10 ±1 s
at 255 ± 5 °C
for 10 ±1 s
Thermal shock
(solder shock)
Dip soldering at
300 °C/5 s
Dip soldering at
300 °C/5 s
No deterioration of
electrical parameters.
Capacitance change:
≤ ±15%
Tests of resistance IEC
Immersion in
Immersion in
Change of varistor
to soldering heat
for SMDs
60068-2-58 60/40 SnPb for 10 s Sn96.5Ag3.0Cu0.5 voltage:
at 260 °C
for 10 s at 260 °C
≤ ±5%
Tests of resistance IEC
Immersion
Immersion
of leads in
Sn96.5Ag3.0Cu0.5 Change of
for 10 s at 260 °C capacitance X7R:
≤ ꢁ5/+10%
Change of varistor
voltage: ≤ ±5%
to soldering heat
for radial leaded
components
(SHCV)
60068-2-20 of leads in
60/40 SnPb
for 10 s at 260 °C
Please read Cautions and warnings and
Important notes at the end of this document.
Page 58 of 67
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