2SC3794A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 500 V
• Collector-Base Voltage, max: 900 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 8
• Transition Frequency, min: 8 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SC3794A might only be marked "C3794A".You can replace the 2SC3794A with the 2SC3149, 2SC3149K, 2SC3149L, 2SC3149M, 2SC3150, 2SC3150-K, 2SC3150-L, 2SC3150-M, 2SC3446, 2SC3446-L, 2SC3446-M, 2SC3446-N, 2SC3447, 2SC3447-L, 2SC3447-M, 2SC3447-N, 2SC3456, 2SC3456-L, 2SC3456-M, 2SC3456-N, 2SC3457, 2SC3457-L, 2SC3457-M, 2SC3457-N, 2SC3749, 2SC3749-L, 2SC3749-M, 2SC3749-N, 2SC3750, 2SC3750-L, 2SC3750-M, 2SC3750-N, 2SC3751, 2SC3751-K, 2SC3751-L, 2SC3751-M, 2SC3752, 2SC3752-K, 2SC3752-L, 2SC3752-M, 2SC3794, 2SC3795, 2SC3795A, 2SC3830, 2SC3866, 2SC5249, 2SC5353, FJPF5027, FJPF5027-N, FJPF5027-O, FJPF5027-R, KSC5020, KSC5020-O, KSC5020-R, KSC5020-Y, KSC5021, KSC5021-O, KSC5021-R, KSC5021-Y, KSC5021F, KSC5021F-O, KSC5021F-R, KSC5021F-Y, KSC5026, KSC5026-N, KSC5026-O, KSC5026-R, KSC5027, KSC5027-N, KSC5027-O, KSC5027-R, KSC5027F, KSC5027F-N, KSC5027F-O, KSC5027F-R, MJE8502 or MJE8503.