0.01 0.1 1 100.001
200
150
100
50
0
pulse width (sec)
Limit voltage (W)
RL7520W-R10
RL7520-R10
RL3264-R050
RL1632-R050
RL3720-R075
RL1220-R10
Moisture Load Life Test
Load Life Test
10 100 1000 10000
1.0
Ta70C
Ta70C
0.0
1.0
Time (hrs)
Referance change (%)
10 100 1000 10000
1.0
0.0
1.0
Time (hrs)
Referance change (%)
Sample:RL7520WT-R033-F (n20pcs)
Ta40C,95%RH
Ta40C,95%RH
Sample:RL7520WT-R022-F (n20pcs)
Sample:RL1220T-R022-J (n20pcs)
Sample:RL7520-R10-F
Sample:RL1220T-R068-J (n20pcs)
10 100 1000 10000
1.0
0.0
1.0
Time (hrs)
Referance change (%)
10 100 1000 10000
1.0
0.0
1.0
Time (hrs)
Referance change (%)
<Resistance to surge voltage>
Reliability Test DATA
Test conditons:70C Apply rated voltage for 90 minutes followed by 30 minute intermission. This cycle is repeated for 1,000 hours.
Test conditons
:
40
C,
95%RH Apply rated voltage for 90 minutes followed by 30 minute intermission. This cycle is repeated for 1,000 hours.
Apply a pulse to a sample resistor and measure the rate of resistance
change. Raise the voltage gradually until the rate of resistance change
exceeds 0.5
%
. The threshold pulse voltage is defined as the upper limit
voltage to hold the rate of resistance change within 60.5%.
Low ohmic resistor receive internally the effects of thermal electromotive
force. We minimize the effects of thermal electromotive force of our low
ohmic resistors through thin film technology. The effect of thermal
electromotive power could be detected by measuring polarization of its
resistance values.
Compared with general-purpose resistors, low resistance resistors are more often used in high temperature environment
and high power applications where the amount of heat is high. High reliability is necessary. Susumu's low ohmic
resistors have excellent reliability of less than 0.01fit.
<Resistance polarization>
resistance polarization
0.02
0.015
0.01
0.005
0
0.005
0.01
0.015
0.02
Changes in resistance value ()
2A
0C
3A
0C
3A
25C
3A
70C
2A
70C
2A
25C
