AT-89S8252 Datasheet, PDF (2/5 Pages) ATMEL Corporation – 125°C DYNAMIC LIFETEST (PLASTIC)

PAGE 2 OF 5
AT-89S8252
PLASTIC PACKAGE
125°C DYNAMIC LIFETEST
LOT
NUMBER
8A1867-1
9B0070
DATE
CODE
8A9841
9B9925
SAMPLE
SIZE
100
100
TOTAL NUMBER
HOURS (K)
100.0
100.0
NUMBER OF
FAILURES
0
0
TOTAL DEVICE HOURS
BEST ESTIMATE
50°C AMBIENT
CONFIDENCE ESTIMATE
FAILURE RATE
200,000 DEVICE HOURS
λ
= 0.4% PER 1,000 HOURS
EXTRAPOLATION TO 50°C VIA ARRHENNIUS
EQUATION AND ACTIVATION ENERGY OF
0.5eV
λ
= 0.01% PER 1,000 HOURS (111 FITS)
λ
60 = 0.01% PER 1,000 HOURS
60% CONFIDENCE (154 FITS)
λ
90 = 0.04% PER 1,000 HOURS
90% CONFIDENCE (390 FITS)