Walsin Technology Corporation
Page 6 of 7 WFxxHB ±0.1% Version 10 NOV.-2006
TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)
TEST PROCEDURE REQUIREMENT
DC resistance
Clause 4.5
DC resistance values measured at the test voltages specified below :
<10Ω@0.1V, <100Ω@0.3V, <1KΩ@1.0V, 10KΩ@3V,
<100KΩ@10V, <1MΩ@25V, <10MΩ@30V
Within the specified tolerance
Temperature
Coefficient of
Resistance(T.C.R)
Clause 4.8
Natural resistance change per change in degree centigrade.
()
6
121
12 10×
−
−
ttR RR (ppm/°C) ; t1 : 20°C+5°C-1°C
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
Refer to
“QUICK REFERENCE DATA”
Short time overload
(S.T.O.L)
Clause 4.13
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.
∆R/R max. ±(0.25%+0.05Ω)
Resistance to
soldering
heat(R.S.H)
Clause 4.18
Un-mounted chips completely immersed for 10±1second in a solder bath at 270
℃±5ºC no visible damage
∆R/R max. ±(0.25%+0.05Ω)
Solderability
Clause 4.17
Un-mounted chips completely immersed for 2±0.5second in a solder bath at
235℃±5℃ good tinning (>95% covered)
no visible damage
Leach Test
Clause 4.18
Un-mounted chips completely immersed for 60±1second in a solder bath at 260
℃±5℃ Ditto
Temperature cycling
Clause 4.19
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
∆R/R max. ±(0.25%+0.05Ω)
Load life
(endurance)
Clause 4.25
70±2ºC, 1000 hours, loaded with RCWV or Vmax,1.5 hours on and 0.5 hours
off ∆R/R max. ±(2%+0.1Ω)
Load life in Humidity
Clause 4.24
1000 hours, at rated continuous working voltage in humidity chamber controller
at 40°C±2°C and 90~95% relative humidity, 1.5hours on and 0.5 hours off ∆R/R max. ±(2%+0.1Ω)
Bending strength
Clause 4.33
Resistors mounted on a 90mm glass epoxy resin PCB(FR4); bending : 3 mm,
once for 10 seconds ∆R/R max. ±(0.25%+0.05Ω)
Adhesion
Clause 4.32
Pressurizing force: 5N, Test time: 10±1sec. No remarkable damage or removal
of the terminations.