KSE181 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
• Electrically Similar to the Popular MJE181 transistor

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the KSE181 is the KSE171.You can replace the KSE181 with the BD177, BD179, BD189, BD787, BD787G, BD789, BD791, BDX35, BDX36, BDX37, KSE182, MJE181, MJE181G, MJE182, MJE182G, MJE225, MJE242 or MJE244.