Data Sheet

AN1012 TIMEKEEPER
®
products
Doc ID 6395 Rev 4 29/33
Table 14. Data from M48T35/Y/AV and M48T37V/Y devices
Temperature
(°C)
SNAPHAT
(BR1225, 48 mAh)
CAPHAT or SNAPHAT
(BR1632, 120 mAh)
V
CC
duty cycle = 100%,
shelf life (years)
V
CC
duty cycle = 0%
Typical
(years)
Worst case
(years)
Typical
(years)
Worst case
(years)
0 10.4 9.0 > 20 > 20 >> 20
10 9.0 7.6 > 20 19.1 >> 20
20 8.1 6.7 > 20 16.6 >> 20
25 7.4 6.0 18.6 14.9 >> 20
30 6.8 5.3 16.9 13.2 >> 20
40 5.5 4.0 13.8 10.0 >> 20
50 4.0 2.6 10.0 6.6 >> 20
60 2.9 1.9 7.4 4.8 > 20
70 2.0 1.2 5.0 3.0 11.0