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B43770A9138M000 Datasheet(PDF) 9 Page - EPCOS |
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B43770A9138M000 Datasheet(HTML) 9 Page - EPCOS |
9 / 16 page 1) Refer to chapter "General technical information, 5.3 Calculation of useful life" on how to interpret the useful life graphs. Useful life depending on ambient temperature TA, TB, TT+B under ripple current operating conditions1) Depending on the application, interpret the graph as follows: 1. Natural cooling Use rated current IAC,R and ambient temperature TA. 2. Cooling of base Use rated current IAC,R (B) and temperature of capacitor base TB. 3. Cooling of terminals and base Use rated current IAC,R (T+B) and temperature of capacitors bas TT+B. Ensure that the temperature of the cooled terminals is lower than that of the case base. Due to the current load capability of the contact elements, the following current limits must not be exceeded, even if the frequency and the temperatur factors have been taken into account: Capacitor diameter Capacitor base cooling Terminal and capacitor base cooling 64.3 mm 62 A 75 A 76.9 mm 80 A 100 A 91.0 mm 90 A 110 A B43750, B43770 Extremely high ripple current 105 °C Page 9 of 16 Please read Cautions and warnings and Important notes at the end of this document. |
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