KSE172 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -100 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 MJE172 transistor

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the KSE172 is the KSE182.The BDP952 (SOT-223) and BDP954 (SOT-223) is the SMD version of the KSE172 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSE172 with the BD180, BD180G, BD790, BD792, MJE172, MJE172G, MJE252 or MJE254.