2SD794-Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 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): 160 to 320
• 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 2SD794-Y transistor can have a current gain of 160 to 320. The gain of the 2SD794 will be in the range from 60 to 320, for the 2SD794-O it will be in the range from 100 to 200, for the 2SD794-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SD794-Y might only be marked "D794-Y".The complementary PNP transistor to the 2SD794-Y is the 2SB744-Y.You can replace the 2SD794-Y with the 2SD1348, 2SD1683, 2SD1722, 2SD1723, 2SD794A, 2SD794A-Y, BD131, BD187, BD189, BDX35, BDX36, BDX37, KSD794, KSD794-Y, KSD794A, KSD794A-Y, MJE225 or MJE242.