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MKP1848710454Y5 Datasheet(PDF) 10 Page - Vishay Siliconix |
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MKP1848710454Y5 Datasheet(HTML) 10 Page - Vishay Siliconix |
10 / 15 page MKP 1848 DC-Link Vishay Roederstein Metallized Polypropylene Film Capacitors DC Capacitor MKP Type www.vishay.com For technical questions, contact: dc-film@vishay.com Document Number: 28164 290 Revision: 02-Feb-09 HEAT CONDUCTIVITY AND HOT SPOT TEMPERATURE POWER DISSIPATION AND MAXIMUM COMPONENT TEMPERATURE RISE The power dissipation must be limited in order not to exceed the maximum allowed component temperature rise as a function of the free air ambient temperature. The component temperature rise ( ΔT) can be measured or calculated by ΔT = P/G: • ΔT = Component temperature rise (°C) • P = Power dissipation of the component (mW) • G = Heat conductivity of the component (mW/°C) MEASURING THE COMPONENT TEMPERATURE The temperature is measured in unloaded (Tamb) and maximum loaded condition (TC). The temperature rise is given by ΔT = T c - Tamb. To avoid thermal radiation or convection, the capacitor must be tested in a closed area from air circulation. Wmax. (mm) HEAT CONDUCTIVITY (mW/°C) PITCH 27.5 mm PITCH 37.5 mm PITCH 52.5 mm 9.0 31 - - 11.0 37 - - 13.0 42 - - 15.0 48 - - 18.0 58 - - 18.5 - 89 - 21.0 68 - - 21.5 - 102 - 24.0 - 116 - 25.0 - - 152 30.0 - 134 181 35.0 - - 197 45.0 - - 213 87.0 - - 341 Thermocouple |
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