2SD794A-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 70 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SD794A-O transistor can have a current gain of 100 to 200. The gain of the 2SD794A will be in the range from 60 to 320, for the 2SD794A-R it will be in the range from 60 to 120, for the 2SD794A-Y it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SD794A-O might only be marked "D794A-O".The complementary PNP transistor to the 2SD794A-O is the 2SB744A-O.The NZT560 (SOT-223) is the SMD version of the 2SD794A-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD794A-O with the 2SD1724, 2SD1724-R, 2SD1725, 2SD1725-R, BD177, BD179, BD189, BD787, BD787G, BD789, BD791, BDX35, BDX36, BDX37, KSD794A, KSD794A-O, KSE181, KSE182, MJE181, MJE181G, MJE182, MJE182G, MJE223, MJE225, MJE240, MJE242 or MJE244.