NTC Thermistor：SCK Series
Power Thermistor for Limiting Inrush Current
ꢀ
Reliability
Item
Standard
Test conditions / Methods
Specifications
Gradually applying the force specified and keeping the unit fixed for
10±1 sec.
Terminal diameter
(mm)
Force
(Kg)
1.0
Tensile Strength
of Terminals
IEC60068-2-21
No visible damage
0.5<d≦0.80
0.8<d≦1.25
2.0
At least 95% of terminal
electrode is covered by
new solder
Solderability
IEC60068-2-20
IEC60068-2-20
245 ± 5℃, 3 ± 0.3 sec.
Resistance to
Soldering Heat
No visible damage
∣ꢀR25/R25∣≦ 10 %
260 ± 3℃, 10 ± 1 sec.
High Temperature
Storage
No visible damage
∣ꢀR25/R25∣≦ 20 %
IEC60068-2-2
IEC60068-2-3
Tu ± 5 ℃ x 1000± 24 hrs
Damp Heat,
Steady State
No visible damage
∣ꢀR25/R25∣≦ 20 %
40 ± 2℃, 90~95% RH, 1000 ± 24 hrs
The conditions shown below shall be repeated 5 cycles
Step
Temperature (℃)
TL ± 5
Period (minutes)
30 ± 3
1
2
3
4
No visible damage
Rapid Change of
Temperature
IEC60068-2-14
∣ꢀR25/R25∣≦ 20 %
Room temperature
5 ± 3
TU
± 5
30 ± 3
Room temperature
5 ± 3
No visible damage
∣ꢀR25/R25∣≦ 20 %
Max. Current
Endurance
IEC60539-1
UL1434
25 ± 5℃, Imax. x 1000± 24 hrs
25 ± 5℃, Imax. , CT , 1min ON / 5 mins OFF x 1000 cycles
No visible damage
∣ꢀR25/R25∣≦ 20 %
CT= Capacitance at 240 Vac
MIL-STD-202F
-Method 302
No visible damage
Insulation Test
1000 VDC 1 min
≧500 Mꢀ
THINKING ELECTRONIC INDUSTRIAL CO., LTD.
16
www.thinking.com.tw
2011.02
All specifications are subject to change without notice.
THINKING [ Thinking Electronic Industrial Co.,Ltd ]
