Approval sheet
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WW10
Size code
WW10: 1210
X
R100
J
T
L
Type code
X : Thick film,
Resistance code – 4 digits
R100 = 0.1 OHM
Tolerance
J: ± 5%
F: ± 1%
Packaging code
Termination code
T: 7” Reeled taping L = Sn base (lead free)
R976 = 0.976 OHM
ꢀ
Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel.
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
REQUIREMENT
Refer to
Natural resistance change per change in degree centigrade.
Temperature Coefficient
of Resistance(T.C.R)
“QUICK REFERENCE DATA”
R2 − R
×106 (ppm/°C)
t1 : 20°C+5°C-1°C
1
Clause 4.8
R
(
t2 − t1
)
1
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
Permanent resistance change after a 5second application of a
voltage 2.5 times RCWV or the maximum overload current
specified in the above list, whichever is less.
Short time overload
(S.T.O.L)
Clause 4.13
∆R/R max. ±(2%+0.001Ω)
Resistance to soldering
heat(R.S.H)
Clause 4.18
Un-mounted chips completely immersed for 10±1 second in a
SAC solder bath at 260℃±5ºC
no visible damage
∆ R/R max.±(1%+0.001Ω)
Un-mounted chips completely immersed for 2±0.5 second in a
SAC solder bath at 235℃±5℃
Solderability
Clause 4.17
good tinning (>95% covered)
no visible damage
30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 30
minutes at +155°C±3°C, 2~3 minutes at 20°C+5°C-1°C, total 5
continuous cycles
no visible damage
Temperature cycling
Clause 4.19
∆R/R max. ±(1%+0.001Ω)
1000 +48/-0 hours, loaded with RCWV or Vmax in chamber
controller 70±2ºC, 1.5 hours on and 0.5 hours off
Load life (endurance)
Clause 4.25
∆R/R max. ± (5%+0.001Ω)
∆R/R max. ± (5%+0.001Ω)
1000 +48/-0 hours, loaded with RCWV or Vmax in humidity
chamber controller at 40°C±2°C and 90~95% relative
humidity, 1.5hours on and 0.5 hours off
Load life in Humidity
Clause 4.24
Page 5 of 7
ASC_WW10X_V07
Sep.- 2011