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AT-MEGA163
PLASTIC PACKAGE
125°C DYNAMIC LIFETEST
LOT
DATE
SAMPLE
SIZE
NUMBER OF FAILURES
AT INDICATED HOURS
NUMBER CODE
(168) (500) (1000)
0H0056 0H0035
0H0059 0H0035
0J1744 0J0102
100
78
0
0
0
0
0
0
0
0
0
100
FAILURE RATE
TOTAL DEVICE HOURS
BEST ESTIMATE
50°C AMBIENT
278,000 DEVICE HOURS
l
= 0.4% PER 1,000 HOURS
EXTRAPOLATION TO 50°C VIA ARRHENNIUS
EQUATION AND ACTIVATION ENERGY OF 0.5eV
= 0.004% PER 1,000 HOURS (36 FITS)
l
l
l
CONFIDENCE ESTIMATE
60 = 0.005% PER 1,000 HOURS
60% CONFIDENCE (47FITS)
90 = 0.01% PER 1,000 HOURS
90% CONFIDENCE (119 FITS)
