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© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com

A4071_A767 • 12/13/2016

Surface Mount Conductive Polymer Aluminum Solid Electrolytic Capacitors

A767 Series, 105°C

Expected Life Calculation Chart

Expected life depends on operating temperature according to the following formula:

Where:

L: Expected life

Lo: Life at maximum permissible operating temperature with rated operating voltage applied (hours)

T: Actual operating temperature

To: Maximum permissible operating temperature

The effect of derating temperature can be seen in this graph.

In this example, the life expectancy of a 2,000 hour Polymer capacitor is significantly greater than that of a 2,000 hour

standard electrolytic capacitor.

Expected Life (hours)

20,000

200,000

2,000

85ºC

105ºC

65ºC

Expected Life Calculation Chart

65

70

75

80

85

90

95

100

105

50,000

100,000

150,000

200,000

Conductive Polymer Electrolytic

Aluminum Electrolytic

Capacitor Life (H)