Product Specification
Circuit Protection
NT series
NTC Inrush Current Limiter
Reliability Test Requirements
Test items
Test conditions
Criterion
Reference standard
High Temperature Storage IEC
60068-2-2
TU±5℃,
1000±24hrs
No visible damage
∣△R25/R25∣≦ 20%
No visible damage
Damp Heat, Steady State
IEC 60068-2-78
40±2℃,90~95%RH ,
1000±24hrs
∣△R25/R25∣≦ 20%
No visible damage
Endurance
25±5℃ ,
IEC 60539-1
Imax.1000±24hrs
∣△R25/R25∣≦ 20%
Step
Temperature (℃)
Period (min.)
30±3
5±3
30±3
5±3
1
2
3
4
TL ± 5
Room
TU ± 5
Room
No visible damage
Rapid Change of Temperature IEC
∣△R25/R25∣≦ 20%
60068-2-14
5 Cycles
Capacitance test
25±5℃ , Cth, interval 2mins, , Number of cycles:
1000,Cth=Capacitance at 340 VDC
No visible damage
standard specifications
∣△R25/R25∣≦ 20%
Cyclic endurance
IEC 60539-1
No visible damage
25±5℃,Imax.1min ON/5min OFF*1000cycles;
∣△R25/R25∣≦20%
Insulation Test
1000 VDC,1min
No visible damage
MIL-STD-202F-Method 302
Gradually applying the force specified and keeping the
unit fixed for 10±1 sec.
Tensile Strength of Terminals
IEC 60068-2-21
No visible damage
Terminal diameter (mm)
0.5<d≦0.8
Force (kg)
1.0
∣△R25/R25∣≦ 10 %
0.8<d≦1.25
2.0
Follow spec:
Hold specimen and apply the force specified below to
each lead. Bend the specimen to 90°, then return to the
original position. Repeat the procedure in the opposite
direction.
Bending Strength of Terminals
IEC60068-2-21
No visible damage
│△V/V1mA│≦5%
Terminal diameter (mm)
0.5<d≦0.8
Force (kg)
0.5
0.8<d≦1.25
1.0
1.25<d
2.0
Solderability
IEC 60068-2-20
245 ± 3 ℃ , 3 ± 0.3 sec
260 ± 3 ℃ ,10 ± 1 sec
≧95%
Resistance to Soldering Heat
IEC 60068-2-20
∣△R/R∣≦ 5 %
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Nov. 27, 2023 V.0