IRFZ44NPbF 50 R V D DS 40 VGS D.U.T. RG +-VDD 30 VGS Pulse Width ≤ 1 µs Duty Factor ≤ 0.1 % 20 I , Drain Current (A) D Fig 10a. Switching Time Test Circuit 10 VDS 90% 025 50 75 100 125 150 175 T , Case Temperature ( C ° ) C 10% Fig 9. Maximum Drain Current Vs. VGS Case Temperature td(on) tr td(off) tf Fig 10b. Switching Time Waveforms 10 ) thJC (Z 1 D = 0.50 0.20 esponse 0.10 PDM al R 0.05 0.1 m t SINGLE PULSE 1 0.02 her 0.01 (THERMAL RESPONSE) t2 T Notes: 1. Duty factor D = t / t 1 2 2. Peak TJ =P DM x ZthJC + TC 0.01 0.00001 0.0001 0.001 0.01 0.1 t , Rectangular Pulse Duration (sec) 1 Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case www.irf.com 5
