2N4238 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 5 W
• DC Current Gain (h_fe): 30 to 150
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the 2N4238 is the 2N4235.You can replace the 2N4238 with the 2N4239, 2N5320, 2N5334, 2N5335, 2SC510 or 2SC512.