Approval sheet
TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)
Essentially all tests are carried out according to the schedule of IEC publication 115-8, category
LCT/UCT/56(rated temperature range : Lower Category Temperature, Upper Category Temperature; damp
heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS.
The tests are carried out in accordance with IEC publication 68, "Recommended basic climatic and mechanical
robustness testing procedure for electronic components" and under standard atmospheric conditions according
to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied :
Temperature: 15°C to 35°C.
Relative humidity: 45% to 75%.
Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar).
All soldering tests are performed with midly activated flux.
TEST
PROCEDURE
Natural resistance change per change in degree centigrade.
R2 R
REQUIREMENT
Temperature
Coefficient of
Resistance(T.C.R)
Refer to
“QUICK REFERENCE DATA”
106 (ppm/C) t1 : 20°C+5°C-1°C
1
R
1t2 t1
Clause 4.8
R1 : Resistance at reference temperature
R2 : Resistance at test temperature +155°C
Permanent resistance change after a 5second application of 5 no visible damage
times rated power
Short time overload
(S.T.O.L)
Clause 4.13
R/R max. ±(1%+0.5m)
Un-mounted chips completely immersed for 10±1second in a
SAC solder bath at 260℃±5ºC
no visible damage
Resistance to soldering
heat(R.S.H)
R/R max. ±(0.5%+0.5m)
Clause 4.18
Solderability
Clause 4.17
Un-mounted chips completely immersed for 3±0.5second in a
SAC solder bath at 235℃±5℃
good tinning (>95% covered)
no visible damage
no visible damage
Temperature cycling
30 minutes at -55C3C, 2~3 minutes at 20°C+5°C-1°C, 30
minutes at +155C3C, 2~3 minutes at 20°C+5°C-1°C, total 5
continuous cycles
Clause 4.19
R/R max. ±(0.5%+0.5m)
1000 +48/-0 hours, loaded with RCWV or Vmax in chamber no visible damage
Load life (endurance)
controller 70±2ºC, 1.5 hours on and 0.5 hours off
Clause 4.25
R/R max. ±(1%+0.5m)
1000 +48/-0 hours, loaded with RCWV or Vmax in humidity no visible damage
Load life in Humidity
chamber controller at 40C2C and 90~95% relative humidity,
1.5hours on and 0.5 hours off
Clause 4.24
R/R max. (1%+0.5m)
Pressurizing force: 5N, Test time: 10±1sec.
Adhesion
No remarkable damage or
removal of the terminations
Clause 4.32
Bending strength
no visible damage
Bending 2mm on 90mm FR4 PCB
R/R max. (0.5%+0.5m)
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ASC_WW25A_V05
Jul – 2023