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1 of 7
LOC B
502-1293
1.6.
Environmental Conditions
Unless otherwise specified, the following environmental conditions prevailed during testing:
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2.
2.1.
Temperature: 15 to 35°C
Relative Humidity: 20 to 80%
SUMMARY OF TESTING
Initial Examination of Product
All specimens were visually examined and no evidence of physical damage detrimental to product
performance was observed.
2.2.
Low Level Crimp and Friction Resistance
All LLCR measurements were taken at 100 milliamperes maximum and 20 millivolts maximum open
circuit voltage. Data summaries (in milliohms) are shown in Figure 3.
Test
Group
Number of
Data Points
10
10
1
Friction
10
10
10
10
10
10
1
Crimp
10
10
10
10
10
10
2
Friction
10
10
10
10
10
10
2
Crimp
10
10
10
10
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Figure 3 (continued)
Condition
LLCR
Min
0.291
-0.013
-0.013
-0.005
0.058
-0.024
0.641
-0.091
-0.010
-0.064
-0.357
-0.113
0.285
-0.024
-0.025
0.008
0.040
0.024
0.622
-0.038
-0.034
-0.033
-0.020
0.010
Max
0.320
0.024
0.069
0.098
0.272
0.300
0.732
0.004
0.043
0.050
0.197
0.228
0.422
0.030
0.062
0.109
0.169
0.208
0.750
0.028
0.059
0.043
0.215
0.280
Mean
0.307
0.009
0.025
0.051
0.116
0.254
0.681
-0.010
0.011
0.008
0.047
0.080
0.330
0.008
0.021
0.045
0.083
0.094
0.683
0.001
0.014
0.012
0.076
0.094
Rev B
2 of 7
502-1293
Test
Group
Number of
Data Points
10
10
3
Friction
10
10
10
10
10
10
3
Crimp
10
10
10
10
10
10
4
Friction
10
10
10
10
10
10
4
Crimp
10
10
10
10
10
10
5
Friction
10
10
10
10
10
10
5
Crimp
10
10
10
10
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Figure 3 (continued)
Condition
LLCR
Min
0.252
0.014
0.004
0.021
0.042
0.088
0.389
-0.006
0.005
0.005
0.014
-0.212
0.248
0.008
0.014
0.034
0.045
0.086
0.384
0.005
0.011
0.012
-0.008
0.032
0.263
-0.025
-0.034
-0.023
0.029
0.016
1.736
-0.012
0.006
0.019
0.023
0.060
Max
0.292
0.045
0.100
0.191
0.222
0.442
0.442
0.026
0.088
0.044
0.110
0.287
0.307
0.040
0.083
0.174
0.345
0.458
0.435
0.055
0.050
0.053
0.075
0.085
0.388
0.012
0.054
0.044
0.095
0.123
1.836
0.054
0.236
0.455
1.160
1.264
Mean
0.273
0.023
0.055
0.081
0.123
0.216
0.426
0.014
0.035
0.029
0.062
0.068
0.272
0.021
0.046
0.080
0.148
0.231
0.421
0.018
0.030
0.035
0.049
0.056
0.312
0.002
0.011
0.020
0.061
0.075
1.785
0.018
0.131
0.153
0.488
0.540
Rev B
3 of 7
502-1293
Test
Group
Number of
Data Points
10
10
6
Friction
10
10
10
10
10
10
6
Crimp
10
10
10
10
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Initial
After initial temperature rise vs current (ΔR)
After humidity/temperature cycling (ΔR)
After temperature life (ΔR)
After vibration (ΔR)
After final temperature rise vs current (ΔR)
Figure 3 (end)
2.3.
Temperature Rise vs Current
The currents (in amperes) necessary to produce a 30°C temperature rise above ambient are shown in
Figure 4.
Test
Group
1
2
3
4
5
6
Number of
Data Points
10
10
10
10
10
10
10
10
10
10
10
10
Condition
Initial
Final
Initial
Final
Initial
Final
Initial
Final
Initial
Final
Initial
Final
Current for 30°C Temperature Rise
Min
25.86
22.66
25.47
22.50
30.41
26.28
29.63
25.87
17.12
13.38
16.96
15.13
Figure 4
2.4.
Humidity/temperature Cycling
No evidence of physical damage was visible as a result of exposure to humidity/temperature cycling.
2.5.
Temperature Life
No evidence of physical damage was visible as a result of exposure to temperature life.
Max
29.87
27.56
29.52
25.77
32.53
30.22
31.97
33.14
17.53
17.34
18.46
17.23
Mean
27.47
24.39
26.76
24.26
31.23
27.84
30.43
27.55
17.32
17.34
17.60
15.94
Condition
LLCR
Min
0.255
-0.009
-0.117
0.005
0.032
0.022
1.734
-0.026
-0.747
-0.045
0.035
0.057
Max
0.386
0.029
0.028
0.068
0.121
0.104
1.785
0.013
0.039
0.185
0.537
0.564
Mean
0.300
0.007
-0.037
0.029
0.066
0.066
1.763
-0.005
-0.320
0.064
0.255
0.241
Rev B
4 of 7
502-1293
2.6.
Sinusoidal Vibration
No discontinuities were detected during vibration testing. Following vibration testing, no cracks, breaks,
or loose parts on the specimens were visible.
2.7.
Final Examination of Product
Specimens were visually examined and no evidence of physical damage detrimental to product
performance was observed.
3.
3.1.
TEST METHODS
Initial Examination of Product
All specimens were visually examined for evidence of physical damage detrimental to product
performance.
3.2.
LLCR
LLCR measurements were made using a 4 terminal measuring technique (Figure 5). The copper wire of
the thermal couple was used for 1 of the voltage probes for both friction and crimp resistance. The test
current was maintained at 100 milliamperes maximum with a 20 millivolt maximum open circuit voltage.
Figure 5
Typical LLCR Measurement Points
3.3.
Temperature Rise vs Current
Temperature rise curves were produced by measuring individual contact temperatures at 5 different
current levels which were plotted to produce a temperature rise vs current curve. Thermocouples were
attached to individual contacts in the crimp area to measure their temperatures. The ambient
temperature was then subtracted from this measured temperature to find the temperature rise. When
the temperature rise of 3 consecutive readings taken at 5 minute intervals did not differ by more than
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