NTE181 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 90 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 4 V
• Collector Current − Continuous, max: 30 A
• Collector Dissipation: 200 W
• DC Current Gain (h_fe): 25 to 100
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the NTE181 is the NTE180.You can replace the NTE181 with the 2N5671, 2N5672, MJ802 or MJ802G.