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DCR2950W65 Datasheet(PDF) 6 Page - Dynex Semiconductor |
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DCR2950W65 Datasheet(HTML) 6 Page - Dynex Semiconductor |
6 / 10 page SEMICONDUCTOR DCR2950W65 6/10 www.dynexsemi.com Fig.7 Maximum permissible case temperature, double side cooled – rectangular wave Fig.8 Maximum permissible heatsink temperature, double side cooled – rectangular wave Fig.9 Maximum (limit) transient thermal impedance – junction to case (° C/kW) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 0 1000 2000 3000 4000 5000 6000 7000 Mean on-state current, I T(AV) - (A) d.c. 180 120 90 60 30 0 10 20 30 40 50 60 70 80 90 100 110 120 130 0 1000 2000 3000 4000 5000 6000 Mean on-state current, I T(AV) - (A) d.c. 180 120 90 60 30 0 2 4 6 8 10 12 14 16 0.001 0.01 0.1 1 10 100 Time ( s ) Double Side Cooling Anode Side Cooling Cathode Sided Cooling 1 2 3 4 Double side cooled Ri (°C/kW) 0.8816 1.2993 2.8048 1.3305 Ti (s) 0.0106818 0.058404 0.3584979 1.1285 Anode side cooled Ri (°C/kW) 1.5197 3.2398 5.7622 0.6312 Ti (s) 0.0170581 0.2424644 6.013 15.364 Cathode side cooled Ri (°C/kW) 1.4106 2.4667 6.7451 3.9054 Ti (s) 0.0158344 0.1786951 3.6201 6.196 Zth = [Ri x ( 1-exp. (t/ti))] [1] R th(j-c) Conduction Tables show the increments of thermal resistance Rth(j-c) when the device operates at conduction angles other than d.c. Double side cooling Anode Side Cooling Cathode Sided Cooling Zth (z) Zth (z) Zth (z) ° sine. rect. ° sine. rect. ° sine. rect. 180 1.00 0.67 180 0.94 0.64 180 0.95 0.65 120 1.16 0.97 120 1.08 0.91 120 1.09 0.92 90 1.33 1.13 90 1.23 1.06 90 1.25 1.07 60 1.48 1.31 60 1.37 1.22 60 1.38 1.23 30 1.61 1.51 30 1.47 1.38 30 1.49 1.40 15 1.66 1.61 15 1.52 1.47 15 1.54 1.49 |
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