2N4033 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 100 to 300
• Transition Frequency, min: 500 MHz
• Operating and Storage Junction Temperature Range: -55 to +175 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The 2SC3438 (SOT-89), BSP43 (SOT-223), BSR43 (SOT-89), FMMTA06 (SOT-23), KST06 (SOT-23), MMBTA06 (SOT-23), PMBTA06 (SOT-23), PZTA06 (SOT-223) and SMBTA06 (SOT-23) is the SMD version of the 2N4033 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The PN4033 is the TO-92 version of the 2N4033.You can replace the 2N4033 with the 2N3019.