LNSZ10 Datasheet, PDF (7/10 Pages) List of Unclassifed Manufacturers – NTC Thermistor SMD

RELIABILITY TEST METHOD
Item
Resistance to Soldering
Heat Test
Test Method
Soldering temperature : 260¡ 5^oC
Duration of immersion : 10¡ 1sec.
Preheating : 150¡ , 1min.
Solderability Test
Adhesion
Soldering temperature : 230¡ 5^oC
Duration of immersion : 5¡ 1sec.
Preheating : 150^oC, 1min.
Force W is applied to DUT.
NTC Thermistor SMD
Criteria for judging
Visual : No mechanical damage Zero-power
resistance at 25^oC
Change as against pretest values within ¡ 3%
Change of B-value : within ¡ 2%
At least 75% of the electrode must be covered with
new solder.
2012 : over 2.0 kg f
1608 : over 1.0 kg f
1005 : over 0.7 kg f
Resistance to
flexure of substrate
The middle part of substrate shall, successively, be
pressurized by means of the pressurizing rod at a rate
of about 1§fi/sec.
Maintenance time : 5 sec.
Bending distance : 1§fi
Visual : No mechanical damage
Dry Heat Test
Cold Test
Damp Heat Test
(Steady State)
Thermal shock Test
Test temperature :
125¡ 2^oC, 85¡ 2^oC (R-T curve Z)
Test duration : 1000+48hrs.
After completion of the test, leaving the sample under
the standard conditions for 24¡ 2hrs.
Zero-power resistance at 25^oC:
Change as against pretest values within ¡ 3%
Change of B-value : within ¡ 2%
Test temperature : -30¡ 2^oC
Test duration : 1000+48hrs.
After completion of the test, leaving the sample under
the standard conditions for 24¡ 2hrs.
Zero-power resistance at 25^oC:
Change as against pretest values within ¡ 3%
Change of B-value : within ¡ 2%
Test temperature : 60¡ 2^oC
Test relative humidity : 90¡›95RH%
Test duration : 1000+24hrs.
After completion of the test, leaving the sample under
the standard conditions for 24¡ 2hrs.
Zero-power resistance at 25^oC:
Change as against pretest values within ¡ 3%
Change of B-value : within ¡ 2%
Zero-power resistance at 25¡ :
Change as against pretest values within ¡ 3%
Change of B-value : within ¡ 2%
This cycle is repeated 1000 times. After completion of
the test, allow the sample to stand under the standard
conditions for at 24¡ 2hrs.
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