2SD1794

The 2SD1794 is a kind of darlington transistor.You have to get some detail information about the absolute maximum ratings if you want to purchase 2SD1794.The Storage Temperature (T_stg) is from -55~+150 .The Junction Temperature (T_j) is +150 .The Collector to Base Voltage (V_CBO) is 200 V.The Collector to Emitter Voltage (V_CEO) is 200 V.The Emitter to Base Voltage (V_EBO) is 7 V.The Collector Current DC (I_C) is 10 A.The Collector Current Peak (I_CP) is 15 A.The Base Current DC (I_B) is 0.5 A.The Base Current Peak (I_BP) is 1.0 A.The Total Transistor Dissipation (P_T) is 50 W at T_c = 25.The Dielectric Strength (V_dis) is 2 kV at terminals to case AC 1 minute. The Mounting Torque (T_OR) is 0.5 N.m but the recommended torque is 0.3N.m.
The following is the electrical characteristics of 2SD1794 at T_c=25.First is about the Collector Cutoff Current.The Max. I_CBO is 0.1 mA at V_CB = 200 V.The Max. I_CEO is 0.1 mA at V_CE = 200 V. The Max. Emitter Cutoff Current (I_EBO) is 5 mA at V_EB = 7V.The Min. DC Current Gain (h_FE) is 1500 and the Max. is 30000 at V_CE = 3V, I_C = 5A. The Max. Collector to Emitter Saturation Voltage (V_CE(sat)) is 1.5 V and the Max. Base to Emitter Saturation Voltage (V_BE(sat)) is 2.0 V under the condition that I_C = 5 A,I_B = 10 mA. The Max Thermal Resistance (_jc) is 2.5 /W.The Typical Transition Frequency (f_T) is 20 MHz at V_CE = 10V, I_C = 1A.Under the condition that I_C = 5A,I_B1 =I_B2 = 10 mA,R_L = 6 and V_BB2 = 4V, the Max Turn on Time (t_on) is 2 s,the Max. Storage Time (t_s) is 12 s and the Max. Fall Time (t_f) is 5 s.