CPTC Thermistor：PP Series
Overload Protection
ꢀ Reliability Test
Item
Standard
Test conditions / Methods
Specifications
Fasten body and apply a force gradually
to each lead for 10±1 sec.
Terminal diameter
Force
T(N)
5.0
10.0
20.0
Tensile Strength of
Terminals *
∣△R25/R25∣≦20%
No visible damage
(mm)
IEC60068-2-21
0.35<d≦0.5
0.5<d≦0.8
0.8<d≦1.25
At least 95% of terminal
electrode is covered by
new solder
255±5℃ ,3±0.5sec,
4±1mm from body .
Solderability*
IEC60068-2-20
IEC60068-2-20
Resistance to
Soldering Heat *
350±10℃ ,3～4 sec,
4±1mm from body
∣ꢀR/R25∣≦20%
No damage observed
Frequency range:10~55Hz
Amplitude:0.75mm or 98m/S2
∣△R25/R25∣≦20%
Vibration *
Shock *
IEC60068-2-6
IEC60068-2-27
Direction:3 mutually perpendicular directions
Duration :6HRS(3x2HRS)
No visible damage
Wave: half-sine
⊿V:1.0m/s
Acceleration:50m/s2
Pulse time:30ms
∣△R25/R25∣≦20%
No visible damage
T
The thermal shock conditions shown below shall be repeated 5 cycles
Temperature (℃)
Step
Period (minutes)
30 ± 3
1
2
3
4
-40 ± 5
Rapid Change of
Temperature
∣△R25/R25∣≦20%
No visible damage
IEC60068-2-14
Room temperature
100 ± 5
5 ± 3
30 ± 3
Room temperature
5 ± 3
+40 ℃,20%R.H X 24hrs →100 ℃ X 16hrs→25℃ X 2hrs→ +40
℃,95%R.HX 24hrs→ 0 ℃ X 2hrs→+40 ℃,95%R.HX 24hrs→ 25 ℃ X
(1~2)hrs
∣△R25/R25∣≦20%
No visible damage
Climatic sequence
IEC60738-1
IEC60068-2-2
IEC60738-1
IEC60068-2-3
IEC60738-1
High Temperature
Storage
∣△R25/R25∣≦20%
No visible damage
60 ℃, for 1000hrs
High Temperature
Continuous Load
UCT=60℃, VR, It≦I≦Imax
∣△R25/R25∣≦20%
No visible damage
for 1000hrs
Damp Heat,
Steady State
∣△R25/R25∣≦20%
No visible damage
40±2℃,90~95%RH, for 1000±2hrs
25±5℃, VR, It≦I≦Imax
1min. on and 5min. Off ×100﹑1,000﹑10,000 or
100,000cycles
Room Temperature
Intermittent Load
∣△R25/R25∣≦20%
No visible damage
＊ : Only application for PPL series
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
14
www.thinking.com.tw
2008.04
THINKING [ Thinking Electronic Industrial Co.,Ltd ]
