IRFZ46N 60 RD LIMITED BY PACKAGE VDS 50 VGS D.U.T. RG + 40 -VDD VGS 30 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% V Fig 9. Maximum Drain Current Vs. GS t Case Temperature d(on) tr td(off) tf Fig 10b. Switching Time Waveforms 10 thJC (Z ) 1 e D = 0.50 pons s 0.20 e R 0.10 PDM 0.05 0.1 t1 0.02 SINGLE PULSE 0.01 (THERMAL RESPONSE) t2 Thermal Notes: 1. Duty factor D = t / t 1 2 2. Peak T = P x Z + T J DM thJC C 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 www.irf.com 5