Approval Sheet
TEST AND REQUIREMENTS
REQUIREMENT
Resistor
TEST
PROCEDURE
Within the specified tolerance
Electrical Characteristics
- DC resistance values measurement
IEC 60115-1 4.8
- Temperature Coefficient of Resistance (T.C.R)
Natural resistance change per change in degree
centigrade.
R2 − R1
×106
(ppm/°C) t1 : 20°C+5°C-1°C
R1
(t2 − t1
)
R1 : Resistance at reference temperature (20°C+5°C/-
1°C)
R2 : Resistance at test temperature (-55°C or +125°C)
Short time overload
(S.T.O.L)
∆R/R max. ±(0.1%+0.05Ω)
Permanent resistance change after a 5second application
of a voltage 2.5 times RCWV or the maximum overload
voltage specified in the above list, whichever is less.
IEC60115-1 4.13
Resistance to soldering
heat(R.S.H)
AEC Q200-15
no visible damage
Un-mounted chips completely immersed for 10±1second
in a SAC solder bath at 260℃±5ºC
∆ R/R max. ±(0.2%+0.05Ω)
good tinning (>95% covered)
no visible damage
Solderability
Un-mounted chips completely immersed for 2±0.5 second
in a SAC solder bath at 235℃±5℃
IEC 60068-2-58
Temperature cycling
Test –55 to 125℃/ dwell time 30min/ Max transfer time
no visible damage
MIL-STD-202 Method 107
20sec 1000 cycles
∆R/R max. ±(0.3%+0.05Ω)
Test 1000 hours/ at 85℃/85% RH./ 10% of operation
power.
Measurement at 24±4 hours after test conclusion
Biased Humidity
∆R/R max. ±(0.3%+0.05Ω)
MIL-STD-202 Method 103
Operational Life
MIL-STD-202 -108
1,000 hours at 125±2°C, loaded with rated power
continuously
∆R/R max. ±(0.3%+0.05Ω)
High Temperature
Exposure
MIL-STD-202-108
1,000 hours at 155℃, un-powered
∆R/R max. ±(0.3%+0.05Ω)
∆R/R max. ±(0.25%+0.05Ω)
Mechanical Shock
1/2 Sine Pulse / 100g Peak / Velocity 12.3ft/sec
MIL-STD-202 Method 213
Vibration
5 g's for 20 min , 12 cycles each of 3 orientations
∆R/R max. ±(0.1%+0.05Ω)
MIL-STD-202 Method 204
Terminal strength
1kg for 60 s
No broken
AEC-Q200-006
∆R/R max. ±(0.1%+0.05Ω)
Board flex
Bending 2mm for 60 sec
AEC-Q200-005
Page 8 of 10
ASC_WFxxT&U_Q
Mar - 2018