2N5191 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 25 to 100
• Transition Frequency, min: 2 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 2N5191 is the 2N5194.You can replace the 2N5191 with the 2N5191G, MJE225, MJE242 or MJE244.The 2N5191G transistor is the lead-free version of the 2N5191.