2SD2494 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 110 V
• Collector-Base Voltage, max: 110 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 6 A
• Collector Dissipation: 60 W
• DC Current Gain (h_fe): 5000 to 30000
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3PF

Here is an image showing the pin diagram of this transistor.The 2SD2494 transistor can have a current gain of 5000 to 30000. The gain of the 2SD2494-O will be in the range from 5000 to 12000, for the 2SD2494-P it will be in the range from 6500 to 20000, for the 2SD2494-Y it will be in the range from 15000 to 30000.Sometimes the "2S" prefix is not marked on the package - the 2SD2494 might only be marked "D2494".The complementary PNP transistor to the 2SD2494 is the 2SB1625.You can replace the 2SD2494 with the 2SD1893, 2SD1894 or 2SD1895.