MJE181 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 12.5 W
• DC Current Gain (h_fe): 50 to 250
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the MJE181 is the MJE171.You can replace the MJE181 with the BD177, BD179, BD189, BD787, BD787G, BD789, BD791, BDX35, BDX36, BDX37, KSE181, KSE182, MJE181G, MJE182, MJE182G, MJE225, MJE242 or MJE244.