IRF4905PbF 80 RD VDS VGS D.U.T. 60 RG -+ VDD -10V 40 Pulse Width ≤ 1 µs Duty Factor ≤ 0.1 % D Fig 10a. Switching Time Test Circuit I , Drain Current (A) 20 td(on) tr td(off) tf VGS 0 10% 25 50 75 100 125 150 175 T , Case Temperature ( C ° ) C 90% Fig 9. Maximum Drain Current Vs. VDS Case Temperature Fig 10b. Switching Time Waveforms 1 JC D = 0.50 ) th (Z 0.20 0.1 0.10 esponse PDM al R 0.05 m t1 0.02 SINGLE PULSE t2 Ther 0.01 (THERMAL RESPONSE) Notes: 1. Duty factor D = t / t 1 2 2. Peak T J= P DM x ZthJC + TC 0.01 0.00001 0.0001 0.001 0.01 0.1 1 t , Rectangular Pulse Duration (sec) 1 Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case