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Capacitance Life @ 65

o

C

R % of C 2.5 V 2.7 V

70 75 80 85 90 95 100 105 110 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500

o Figure 4: BCAP2600 Capacitance degradation at 2.7 V and 2.5 V at 65 C Figure 4 represents the expected capacitance degradation relative to the product specification. The plot, along with the fact that the influence of temperature has a doubling effect for every 10
o C, can be used to predict the expected performance change for a variety of conditions. From this plot it is expected that a: 30% reduction in rated capacitance may occur for an ultracapacitor held at 2.7 V after 5,500 hrs @ 65

Time (hours)

o o C 11,000 hrs @ 55
o C 22,000 hrs @ 45
o C 44,000 hrs @ 35
o C 88,000 hrs @ 25 C 15% reduction in rated capacitance may occur for an ultracapacitor held at 2.5 V after 5,500 hrs @ 65
o o C 11,000 hrs @ 55
o C 22,000 hrs @ 45
o C 44,000 hrs @ 35
o C 88,000 hrs @ 25 C

BOOSTCAP® Product Guide - 16729 -9 -

PRODUCT GUIDE 1.2