AT-89S8252 Datasheet, PDF (3/5 Pages) ATMEL Corporation – 125°C DYNAMIC LIFETEST (PLASTIC)

PAGE 3 OF 5
LOT
NUMBER
DATE
CODE
8A1867-1 8A9841
9B0070 9B9925
AT-89S8252
PLASTIC PACKAGE
150°C RETENTION BAKE
SAMPLE
SIZE
100
50
TOTAL NUMBER
HOURS (K)
100.0
50.0
NUMBER OF
FAILURES
0
0
TOTAL DEVICE HOURS
BEST ESTIMATE
50°C AMBIENT
CONFIDENCE ESTIMATE
FAILURE RATE
150,000 DEVICE HOURS
λ
= 0.7% PER 1,000 HOURS
EXTRAPOLATION TO 50°C VIA ARRHENNIUS
EQUATION AND ACTIVATION ENERGY OF
0.5eV
λ
= 0.01% PER 1,000 HOURS (98 FITS)
λ
60 = 0.01% PER 1,000 HOURS
60% CONFIDENCE (131 FITS)
λ
90 = 0.03% PER 1,000 HOURS
90% CONFIDENCE (326 FITS)